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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-comment'>-- -*-haskell-*-</span>
<a name="line-3"></a><span class='hs-comment'>-- GIMP Toolkit (GTK) CustomStore TreeModel</span>
<a name="line-4"></a><span class='hs-comment'>--</span>
<a name="line-5"></a><span class='hs-comment'>-- Author : Duncan Coutts, Axel Simon</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- Created: 11 Feburary 2006</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- Copyright (C) 2005 Duncan Coutts, Axel Simon</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- This library is free software; you can redistribute it and/or</span>
<a name="line-12"></a><span class='hs-comment'>-- modify it under the terms of the GNU Lesser General Public</span>
<a name="line-13"></a><span class='hs-comment'>-- License as published by the Free Software Foundation; either</span>
<a name="line-14"></a><span class='hs-comment'>-- version 2.1 of the License, or (at your option) any later version.</span>
<a name="line-15"></a><span class='hs-comment'>--</span>
<a name="line-16"></a><span class='hs-comment'>-- This library is distributed in the hope that it will be useful,</span>
<a name="line-17"></a><span class='hs-comment'>-- but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="line-18"></a><span class='hs-comment'>-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="line-19"></a><span class='hs-comment'>-- Lesser General Public License for more details.</span>
<a name="line-20"></a><span class='hs-comment'>--</span>
<a name="line-21"></a><span class='hs-comment'>-- |</span>
<a name="line-22"></a><span class='hs-comment'>-- Maintainer : gtk2hs-users@lists.sourceforge.net</span>
<a name="line-23"></a><span class='hs-comment'>-- Stability : provisional</span>
<a name="line-24"></a><span class='hs-comment'>-- Portability : portable (depends on GHC)</span>
<a name="line-25"></a><span class='hs-comment'>--</span>
<a name="line-26"></a><span class='hs-comment'>-- Standard model to store list data.</span>
<a name="line-27"></a><span class='hs-comment'>--</span>
<a name="line-28"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>ModelView</span><span class='hs-varop'>.</span><span class='hs-conid'>ListStore</span> <span class='hs-layout'>(</span>
<a name="line-29"></a>
<a name="line-30"></a><span class='hs-comment'>-- * Types </span>
<a name="line-31"></a> <span class='hs-conid'>ListStore</span><span class='hs-layout'>,</span>
<a name="line-32"></a>
<a name="line-33"></a><span class='hs-comment'>-- * Constructors</span>
<a name="line-34"></a> <span class='hs-varid'>listStoreNew</span><span class='hs-layout'>,</span>
<a name="line-35"></a> <span class='hs-varid'>listStoreNewDND</span><span class='hs-layout'>,</span>
<a name="line-36"></a>
<a name="line-37"></a><span class='hs-comment'>-- * Implementation of Interfaces</span>
<a name="line-38"></a> <span class='hs-varid'>listStoreDefaultDragSourceIface</span><span class='hs-layout'>,</span>
<a name="line-39"></a> <span class='hs-varid'>listStoreDefaultDragDestIface</span><span class='hs-layout'>,</span>
<a name="line-40"></a>
<a name="line-41"></a><span class='hs-comment'>-- * Methods</span>
<a name="line-42"></a> <span class='hs-varid'>listStoreIterToIndex</span><span class='hs-layout'>,</span>
<a name="line-43"></a> <span class='hs-varid'>listStoreGetValue</span><span class='hs-layout'>,</span>
<a name="line-44"></a> <span class='hs-varid'>listStoreSetValue</span><span class='hs-layout'>,</span>
<a name="line-45"></a> <span class='hs-varid'>listStoreToList</span><span class='hs-layout'>,</span>
<a name="line-46"></a> <span class='hs-varid'>listStoreGetSize</span><span class='hs-layout'>,</span>
<a name="line-47"></a> <span class='hs-varid'>listStoreInsert</span><span class='hs-layout'>,</span>
<a name="line-48"></a> <span class='hs-varid'>listStorePrepend</span><span class='hs-layout'>,</span>
<a name="line-49"></a> <span class='hs-varid'>listStoreAppend</span><span class='hs-layout'>,</span>
<a name="line-50"></a> <span class='hs-varid'>listStoreRemove</span><span class='hs-layout'>,</span>
<a name="line-51"></a> <span class='hs-varid'>listStoreClear</span><span class='hs-layout'>,</span>
<a name="line-52"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-53"></a>
<a name="line-54"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span><span class='hs-varid'>liftM</span><span class='hs-layout'>,</span> <span class='hs-varid'>when</span><span class='hs-layout'>)</span>
<a name="line-55"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>IORef</span>
<a name="line-56"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Ix</span> <span class='hs-layout'>(</span><span class='hs-varid'>inRange</span><span class='hs-layout'>)</span>
<a name="line-57"></a>
<a name="line-58"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__>=606</span>
<a name="line-59"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Sequence</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Seq</span>
<a name="line-60"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Sequence</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span><span class='hs-layout'>)</span>
<a name="line-61"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>F</span>
<a name="line-62"></a><span class='hs-cpp'>#else</span>
<a name="line-63"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>ModelView</span><span class='hs-varop'>.</span><span class='hs-conid'>Sequence</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Seq</span>
<a name="line-64"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>ModelView</span><span class='hs-varop'>.</span><span class='hs-conid'>Sequence</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span><span class='hs-layout'>)</span>
<a name="line-65"></a><span class='hs-cpp'>#endif</span>
<a name="line-66"></a>
<a name="line-67"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>GObjectClass</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>TreeModelClass</span><span class='hs-layout'>)</span>
<a name="line-68"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>ModelView</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>TypedTreeModelClass</span><span class='hs-layout'>,</span> <span class='hs-conid'>TreeIter</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-69"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>ModelView</span><span class='hs-varop'>.</span><span class='hs-conid'>CustomStore</span>
<a name="line-70"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>ModelView</span><span class='hs-varop'>.</span><span class='hs-conid'>TreeModel</span>
<a name="line-71"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>ModelView</span><span class='hs-varop'>.</span><span class='hs-conid'>TreeDrag</span>
<a name="line-72"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Trans</span> <span class='hs-layout'>(</span> <span class='hs-varid'>liftIO</span> <span class='hs-layout'>)</span>
<a name="line-73"></a>
<a name="line-74"></a><a name="ListStore"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ListStore</span> <span class='hs-layout'>(</span><span class='hs-conid'>CustomStore</span> <span class='hs-layout'>(</span><span class='hs-conid'>IORef</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-75"></a>
<a name="line-76"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>TypedTreeModelClass</span> <span class='hs-conid'>ListStore</span>
<a name="line-77"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>TreeModelClass</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-78"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>GObjectClass</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-79"></a> <span class='hs-varid'>toGObject</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>tm</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toGObject</span> <span class='hs-varid'>tm</span>
<a name="line-80"></a> <span class='hs-varid'>unsafeCastGObject</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ListStore</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unsafeCastGObject</span>
<a name="line-81"></a>
<a name="line-82"></a><a name="listStoreNew"></a><span class='hs-comment'>-- | Create a new 'TreeModel' that contains a list of elements.</span>
<a name="line-83"></a><span class='hs-definition'>listStoreNew</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-84"></a><span class='hs-definition'>listStoreNew</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>listStoreNewDND</span> <span class='hs-varid'>xs</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>listStoreDefaultDragSourceIface</span><span class='hs-layout'>)</span>
<a name="line-85"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>listStoreDefaultDragDestIface</span><span class='hs-layout'>)</span>
<a name="line-86"></a>
<a name="line-87"></a><a name="listStoreNewDND"></a><span class='hs-comment'>-- | Create a new 'TreeModel' that contains a list of elements. In addition, specify two</span>
<a name="line-88"></a><span class='hs-comment'>-- interfaces for drag and drop.</span>
<a name="line-89"></a><span class='hs-comment'>--</span>
<a name="line-90"></a><span class='hs-definition'>listStoreNewDND</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ the initial content of the model</span>
<a name="line-91"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>DragSourceIface</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ an optional interface for drags</span>
<a name="line-92"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>DragDestIface</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ an optional interface to handle drops</span>
<a name="line-93"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ the new model</span>
<a name="line-94"></a><span class='hs-definition'>listStoreNewDND</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>mDSource</span> <span class='hs-varid'>mDDest</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-95"></a> <span class='hs-varid'>rows</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newIORef</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-96"></a>
<a name="line-97"></a> <span class='hs-varid'>customStoreNew</span> <span class='hs-varid'>rows</span> <span class='hs-conid'>ListStore</span> <span class='hs-conid'>TreeModelIface</span> <span class='hs-layout'>{</span>
<a name="line-98"></a> <span class='hs-varid'>treeModelIfaceGetFlags</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>TreeModelListOnly</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-99"></a> <span class='hs-varid'>treeModelIfaceGetIter</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>n</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>readIORef</span> <span class='hs-varid'>rows</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>rows</span> <span class='hs-keyglyph'>-></span>
<a name="line-100"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>rows</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyword'>else</span>
<a name="line-101"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-102"></a> <span class='hs-varid'>treeModelIfaceGetPath</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>n</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-103"></a> <span class='hs-varid'>treeModelIfaceGetRow</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>n</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-104"></a> <span class='hs-varid'>readIORef</span> <span class='hs-varid'>rows</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>rows</span> <span class='hs-keyglyph'>-></span>
<a name="line-105"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>inRange</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>rows</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span>
<a name="line-106"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>rows</span> <span class='hs-varop'>`</span><span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>index</span><span class='hs-varop'>`</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span>
<a name="line-107"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>fail</span> <span class='hs-str'>"ListStore.getRow: iter does not refer to a valid entry"</span><span class='hs-layout'>,</span>
<a name="line-108"></a>
<a name="line-109"></a> <span class='hs-varid'>treeModelIfaceIterNext</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>n</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-110"></a> <span class='hs-varid'>readIORef</span> <span class='hs-varid'>rows</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>rows</span> <span class='hs-keyglyph'>-></span>
<a name="line-111"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>inRange</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>rows</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-varop'>+</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-112"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-varop'>+</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-113"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span>
<a name="line-114"></a> <span class='hs-varid'>treeModelIfaceIterChildren</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span>
<a name="line-115"></a> <span class='hs-varid'>treeModelIfaceIterHasChild</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>False</span><span class='hs-layout'>,</span>
<a name="line-116"></a> <span class='hs-varid'>treeModelIfaceIterNChildren</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>index</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>readIORef</span> <span class='hs-varid'>rows</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>rows</span> <span class='hs-keyglyph'>-></span>
<a name="line-117"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>index</span> <span class='hs-keyword'>of</span>
<a name="line-118"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>rows</span>
<a name="line-119"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span>
<a name="line-120"></a> <span class='hs-varid'>treeModelIfaceIterNthChild</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>index</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>index</span> <span class='hs-keyword'>of</span>
<a name="line-121"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-122"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span>
<a name="line-123"></a> <span class='hs-varid'>treeModelIfaceIterParent</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span>
<a name="line-124"></a> <span class='hs-varid'>treeModelIfaceRefNode</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>,</span>
<a name="line-125"></a> <span class='hs-varid'>treeModelIfaceUnrefNode</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-126"></a> <span class='hs-layout'>}</span> <span class='hs-varid'>mDSource</span> <span class='hs-varid'>mDDest</span>
<a name="line-127"></a>
<a name="line-128"></a>
<a name="line-129"></a><a name="listStoreIterToIndex"></a><span class='hs-comment'>-- | Convert a 'TreeIter' to an an index into the 'ListStore'. Note that this</span>
<a name="line-130"></a><span class='hs-comment'>-- function merely extracts the second element of the 'TreeIter'.</span>
<a name="line-131"></a><span class='hs-definition'>listStoreIterToIndex</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>TreeIter</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-132"></a><span class='hs-definition'>listStoreIterToIndex</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>n</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span>
<a name="line-133"></a>
<a name="line-134"></a><a name="listStoreDefaultDragSourceIface"></a><span class='hs-comment'>-- | Default drag functions for 'Graphics.UI.Gtk.ModelView.ListStore'. These</span>
<a name="line-135"></a><span class='hs-comment'>-- functions allow the rows of the model to serve as drag source. Any row is</span>
<a name="line-136"></a><span class='hs-comment'>-- allowed to be dragged and the data set in the 'SelectionDataM' object is</span>
<a name="line-137"></a><span class='hs-comment'>-- set with 'treeSetRowDragData', i.e. it contains the model and the</span>
<a name="line-138"></a><span class='hs-comment'>-- 'TreePath' to the row.</span>
<a name="line-139"></a><span class='hs-definition'>listStoreDefaultDragSourceIface</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DragSourceIface</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>row</span>
<a name="line-140"></a><span class='hs-definition'>listStoreDefaultDragSourceIface</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DragSourceIface</span> <span class='hs-layout'>{</span>
<a name="line-141"></a> <span class='hs-varid'>treeDragSourceRowDraggable</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>True</span><span class='hs-layout'>,</span>
<a name="line-142"></a> <span class='hs-varid'>treeDragSourceDragDataGet</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>treeSetRowDragData</span><span class='hs-layout'>,</span>
<a name="line-143"></a> <span class='hs-varid'>treeDragSourceDragDataDelete</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>model</span> <span class='hs-layout'>(</span><span class='hs-varid'>dest</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-144"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>listStoreRemove</span> <span class='hs-varid'>model</span> <span class='hs-varid'>dest</span>
<a name="line-145"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>True</span>
<a name="line-146"></a>
<a name="line-147"></a> <span class='hs-layout'>}</span>
<a name="line-148"></a>
<a name="line-149"></a><a name="listStoreDefaultDragDestIface"></a><span class='hs-comment'>-- | Default drop functions for 'Graphics.UI.Gtk.ModelView.ListStore'. These</span>
<a name="line-150"></a><span class='hs-comment'>-- functions accept a row and insert the row into the new location if it is</span>
<a name="line-151"></a><span class='hs-comment'>-- dragged into a tree view</span>
<a name="line-152"></a><span class='hs-comment'>-- that uses the same model.</span>
<a name="line-153"></a><span class='hs-definition'>listStoreDefaultDragDestIface</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DragDestIface</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>row</span>
<a name="line-154"></a><span class='hs-definition'>listStoreDefaultDragDestIface</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DragDestIface</span> <span class='hs-layout'>{</span>
<a name="line-155"></a> <span class='hs-varid'>treeDragDestRowDropPossible</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>model</span> <span class='hs-varid'>dest</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-156"></a> <span class='hs-varid'>mModelPath</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>treeGetRowDragData</span>
<a name="line-157"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mModelPath</span> <span class='hs-keyword'>of</span>
<a name="line-158"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>False</span>
<a name="line-159"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>model'</span><span class='hs-layout'>,</span> <span class='hs-varid'>source</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>toTreeModel</span> <span class='hs-varid'>model</span><span class='hs-varop'>==</span><span class='hs-varid'>toTreeModel</span> <span class='hs-varid'>model'</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-160"></a> <span class='hs-varid'>treeDragDestDragDataReceived</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>model</span> <span class='hs-layout'>(</span><span class='hs-varid'>dest</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-161"></a> <span class='hs-varid'>mModelPath</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>treeGetRowDragData</span>
<a name="line-162"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mModelPath</span> <span class='hs-keyword'>of</span>
<a name="line-163"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>False</span>
<a name="line-164"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>model'</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>source</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-165"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>toTreeModel</span> <span class='hs-varid'>model</span><span class='hs-varop'>/=</span><span class='hs-varid'>toTreeModel</span> <span class='hs-varid'>model'</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>False</span>
<a name="line-166"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-167"></a> <span class='hs-varid'>row</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>listStoreGetValue</span> <span class='hs-varid'>model</span> <span class='hs-varid'>source</span>
<a name="line-168"></a> <span class='hs-varid'>listStoreInsert</span> <span class='hs-varid'>model</span> <span class='hs-varid'>dest</span> <span class='hs-varid'>row</span>
<a name="line-169"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>True</span>
<a name="line-170"></a> <span class='hs-layout'>}</span>
<a name="line-171"></a>
<a name="line-172"></a><a name="listStoreGetValue"></a><span class='hs-comment'>-- | Extract the value at the given index.</span>
<a name="line-173"></a><span class='hs-comment'>--</span>
<a name="line-174"></a><span class='hs-definition'>listStoreGetValue</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-175"></a><span class='hs-definition'>listStoreGetValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-varid'>index</span> <span class='hs-keyglyph'>=</span>
<a name="line-176"></a> <span class='hs-varid'>readIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>`</span><span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>index</span><span class='hs-varop'>`</span> <span class='hs-varid'>index</span><span class='hs-layout'>)</span>
<a name="line-177"></a>
<a name="line-178"></a><a name="listStoreSetValue"></a><span class='hs-comment'>-- | Update the value at the given index. The index must exist.</span>
<a name="line-179"></a><span class='hs-comment'>--</span>
<a name="line-180"></a><span class='hs-definition'>listStoreSetValue</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-181"></a><span class='hs-definition'>listStoreSetValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-varid'>index</span> <span class='hs-varid'>value</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-182"></a> <span class='hs-varid'>modifyIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>update</span> <span class='hs-varid'>index</span> <span class='hs-varid'>value</span><span class='hs-layout'>)</span>
<a name="line-183"></a> <span class='hs-varid'>treeModelRowChanged</span> <span class='hs-varid'>model</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>index</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>index</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-184"></a>
<a name="line-185"></a><a name="listStoreToList"></a><span class='hs-comment'>-- | Extract all data from the store.</span>
<a name="line-186"></a><span class='hs-comment'>--</span>
<a name="line-187"></a><span class='hs-definition'>listStoreToList</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-188"></a><span class='hs-definition'>listStoreToList</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-189"></a> <span class='hs-varid'>liftM</span>
<a name="line-190"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__>=606</span>
<a name="line-191"></a> <span class='hs-conid'>F</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-192"></a><span class='hs-cpp'>#else</span>
<a name="line-193"></a> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
<a name="line-194"></a><span class='hs-cpp'>#endif</span>
<a name="line-195"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>readIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span>
<a name="line-196"></a>
<a name="line-197"></a><a name="listStoreGetSize"></a><span class='hs-comment'>-- | Query the number of elements in the store.</span>
<a name="line-198"></a><span class='hs-definition'>listStoreGetSize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span>
<a name="line-199"></a><span class='hs-definition'>listStoreGetSize</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-200"></a> <span class='hs-varid'>liftM</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varop'>$</span> <span class='hs-varid'>readIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span>
<a name="line-201"></a>
<a name="line-202"></a><a name="listStoreInsert"></a><span class='hs-comment'>-- | Insert an element in front of the given element. The element is appended</span>
<a name="line-203"></a><span class='hs-comment'>-- if the index is greater or equal to the size of the list.</span>
<a name="line-204"></a><span class='hs-definition'>listStoreInsert</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-205"></a><span class='hs-definition'>listStoreInsert</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-varid'>index</span> <span class='hs-varid'>value</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-206"></a> <span class='hs-varid'>seq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span>
<a name="line-207"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>index</span> <span class='hs-varop'>>=</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-208"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>index'</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>index</span> <span class='hs-varop'>></span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>seq</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>seq</span>
<a name="line-209"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>index</span>
<a name="line-210"></a> <span class='hs-varid'>writeIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>insert</span> <span class='hs-varid'>index'</span> <span class='hs-varid'>value</span> <span class='hs-varid'>seq</span><span class='hs-layout'>)</span>
<a name="line-211"></a> <span class='hs-varid'>stamp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>customStoreGetStamp</span> <span class='hs-varid'>model</span>
<a name="line-212"></a> <span class='hs-varid'>treeModelRowInserted</span> <span class='hs-varid'>model</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>index'</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-varid'>stamp</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>index'</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-213"></a>
<a name="line-214"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>insert</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Seq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Seq</span> <span class='hs-varid'>a</span>
<a name="line-215"></a> <span class='hs-varid'>insert</span> <span class='hs-varid'>i</span> <span class='hs-varid'>x</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>front</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.><</span> <span class='hs-varid'>x</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.<|</span> <span class='hs-varid'>back</span>
<a name="line-216"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>front</span><span class='hs-layout'>,</span> <span class='hs-varid'>back</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>splitAt</span> <span class='hs-varid'>i</span> <span class='hs-varid'>xs</span>
<a name="line-217"></a>
<a name="line-218"></a><a name="listStorePrepend"></a><span class='hs-comment'>-- | Prepend the element to the store.</span>
<a name="line-219"></a><span class='hs-definition'>listStorePrepend</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-220"></a><span class='hs-definition'>listStorePrepend</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-varid'>value</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-221"></a> <span class='hs-varid'>modifyIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span>
<a name="line-222"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>seq</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>value</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.<|</span> <span class='hs-varid'>seq</span><span class='hs-layout'>)</span>
<a name="line-223"></a> <span class='hs-varid'>stamp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>customStoreGetStamp</span> <span class='hs-varid'>model</span>
<a name="line-224"></a> <span class='hs-varid'>treeModelRowInserted</span> <span class='hs-varid'>model</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-varid'>stamp</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-225"></a>
<a name="line-226"></a><a name="listStorePrependList"></a><span class='hs-comment'>-- | Prepend a list to the store. Not implemented yet.</span>
<a name="line-227"></a><span class='hs-definition'>listStorePrependList</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-228"></a><span class='hs-definition'>listStorePrependList</span> <span class='hs-varid'>store</span> <span class='hs-varid'>list</span> <span class='hs-keyglyph'>=</span>
<a name="line-229"></a> <span class='hs-varid'>mapM_</span> <span class='hs-layout'>(</span><span class='hs-varid'>listStoreInsert</span> <span class='hs-varid'>store</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverse</span> <span class='hs-varid'>list</span><span class='hs-layout'>)</span>
<a name="line-230"></a>
<a name="line-231"></a><a name="listStoreAppend"></a><span class='hs-comment'>-- | Append an element to the store. Returns the index of the inserted</span>
<a name="line-232"></a><span class='hs-comment'>-- element.</span>
<a name="line-233"></a><span class='hs-definition'>listStoreAppend</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span>
<a name="line-234"></a><span class='hs-definition'>listStoreAppend</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-varid'>value</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-235"></a> <span class='hs-varid'>index</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>atomicModifyIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span>
<a name="line-236"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>seq</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>seq</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.|></span> <span class='hs-varid'>value</span><span class='hs-layout'>,</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>seq</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-237"></a> <span class='hs-varid'>stamp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>customStoreGetStamp</span> <span class='hs-varid'>model</span>
<a name="line-238"></a> <span class='hs-varid'>treeModelRowInserted</span> <span class='hs-varid'>model</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>index</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeIter</span> <span class='hs-varid'>stamp</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>index</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-239"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>index</span>
<a name="line-240"></a>
<a name="line-241"></a><span class='hs-comment'>{-
<a name="line-242"></a>listStoreAppendList :: ListStore a -> [a] -> IO ()
<a name="line-243"></a>listStoreAppendList (ListStore model) values = do
<a name="line-244"></a> seq <- readIORef (customStoreGetPrivate model)
<a name="line-245"></a> let seq' = Seq.fromList values
<a name="line-246"></a> startIndex = Seq.length seq
<a name="line-247"></a> endIndex = startIndex + Seq.length seq' - 1
<a name="line-248"></a> writeIORef (customStoreGetPrivate model) (seq Seq.>< seq')
<a name="line-249"></a> stamp <- customStoreGetStamp model
<a name="line-250"></a> flip mapM [startIndex..endIndex] $ \index ->
<a name="line-251"></a> treeModelRowInserted model [index] (TreeIter stamp (fromIntegral index) 0 0)
<a name="line-252"></a>-}</span>
<a name="line-253"></a>
<a name="line-254"></a><a name="listStoreRemove"></a><span class='hs-comment'>-- | Remove the element at the given index.</span>
<a name="line-255"></a><span class='hs-comment'>--</span>
<a name="line-256"></a><span class='hs-definition'>listStoreRemove</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-257"></a><span class='hs-definition'>listStoreRemove</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-varid'>index</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-258"></a> <span class='hs-varid'>seq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span>
<a name="line-259"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>index</span> <span class='hs-varop'>>=</span><span class='hs-num'>0</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>index</span> <span class='hs-varop'><</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>seq</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-260"></a> <span class='hs-varid'>writeIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>delete</span> <span class='hs-varid'>index</span> <span class='hs-varid'>seq</span><span class='hs-layout'>)</span>
<a name="line-261"></a> <span class='hs-varid'>treeModelRowDeleted</span> <span class='hs-varid'>model</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>index</span><span class='hs-keyglyph'>]</span>
<a name="line-262"></a> <span class='hs-comment'>--TODO we should probably fail on a bad index</span>
<a name="line-263"></a>
<a name="line-264"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>delete</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Seq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Seq</span> <span class='hs-varid'>a</span>
<a name="line-265"></a> <span class='hs-varid'>delete</span> <span class='hs-varid'>i</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>front</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.><</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>drop</span> <span class='hs-num'>1</span> <span class='hs-varid'>back</span>
<a name="line-266"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>front</span><span class='hs-layout'>,</span> <span class='hs-varid'>back</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>splitAt</span> <span class='hs-varid'>i</span> <span class='hs-varid'>xs</span>
<a name="line-267"></a>
<a name="line-268"></a><a name="listStoreClear"></a><span class='hs-comment'>-- | Empty the store.</span>
<a name="line-269"></a><span class='hs-definition'>listStoreClear</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-270"></a><span class='hs-definition'>listStoreClear</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListStore</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-271"></a>
<a name="line-272"></a> <span class='hs-comment'>-- Since deleting rows can cause callbacks (eg due to selection changes)</span>
<a name="line-273"></a> <span class='hs-comment'>-- we have to make sure the model is consitent with the view at each</span>
<a name="line-274"></a> <span class='hs-comment'>-- intermediate step of clearing the store. Otherwise at some intermediate</span>
<a name="line-275"></a> <span class='hs-comment'>-- stage when the view has only been informed about some delections, the</span>
<a name="line-276"></a> <span class='hs-comment'>-- user might query the model expecting to find the remaining rows are there</span>
<a name="line-277"></a> <span class='hs-comment'>-- but find them deleted. That'd be bad.</span>
<a name="line-278"></a> <span class='hs-comment'>--</span>
<a name="line-279"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>loop</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-conid'>EmptyR</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-280"></a> <span class='hs-varid'>loop</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-varid'>seq</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.:></span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-281"></a> <span class='hs-varid'>writeIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span> <span class='hs-varid'>seq</span>
<a name="line-282"></a> <span class='hs-varid'>treeModelRowDeleted</span> <span class='hs-varid'>model</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>n</span><span class='hs-keyglyph'>]</span>
<a name="line-283"></a> <span class='hs-varid'>loop</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>viewr</span> <span class='hs-varid'>seq</span><span class='hs-layout'>)</span>
<a name="line-284"></a>
<a name="line-285"></a> <span class='hs-keyword'>in</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>seq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readIORef</span> <span class='hs-layout'>(</span><span class='hs-varid'>customStoreGetPrivate</span> <span class='hs-varid'>model</span><span class='hs-layout'>)</span>
<a name="line-286"></a> <span class='hs-varid'>loop</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>seq</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>viewr</span> <span class='hs-varid'>seq</span><span class='hs-layout'>)</span>
<a name="line-287"></a>
<a name="line-288"></a><a name="listStoreReorder"></a><span class='hs-comment'>-- | Permute the rows of the store. Not yet implemented.</span>
<a name="line-289"></a><span class='hs-definition'>listStoreReorder</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Int</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-290"></a><span class='hs-definition'>listStoreReorder</span> <span class='hs-varid'>store</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>undefined</span>
<a name="line-291"></a>
<a name="line-292"></a><a name="listStoreSwap"></a><span class='hs-comment'>-- | Swap two rows of the store. Not yet implemented.</span>
<a name="line-293"></a><span class='hs-definition'>listStoreSwap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-294"></a><span class='hs-definition'>listStoreSwap</span> <span class='hs-varid'>store</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>undefined</span>
<a name="line-295"></a>
<a name="line-296"></a><a name="listStoreMoveBefore"></a><span class='hs-comment'>-- | Move the element at the first index in front of the element denoted by</span>
<a name="line-297"></a><span class='hs-comment'>-- the second index. Not yet implemented.</span>
<a name="line-298"></a><span class='hs-definition'>listStoreMoveBefore</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-299"></a><span class='hs-definition'>listStoreMoveBefore</span> <span class='hs-varid'>store</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>undefined</span>
<a name="line-300"></a>
<a name="line-301"></a><a name="listStoreMoveAfter"></a><span class='hs-comment'>-- | Move the element at the first index past the element denoted by the</span>
<a name="line-302"></a><span class='hs-comment'>-- second index. Not yet implemented.</span>
<a name="line-303"></a><span class='hs-definition'>listStoreMoveAfter</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ListStore</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-304"></a><span class='hs-definition'>listStoreMoveAfter</span> <span class='hs-varid'>store</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>undefined</span>
<a name="line-305"></a>
</pre></body>
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