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Breadcrumbs go here --> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <h1 class="title">calculator.js Example File</h1> <span class="small-subtitle">demos/declarative/calculator/qml/calculator/CalculatorCore/calculator.js</span> <!-- $$$demos/declarative/calculator/qml/calculator/CalculatorCore/calculator.js-description --> <div class="descr"> <a name="details"></a> <pre class="js"> var <span class="name">curVal</span> = <span class="number">0</span> var <span class="name">memory</span> = <span class="number">0</span> var <span class="name">lastOp</span> = <span class="string">""</span> var <span class="name">timer</span> = <span class="number">0</span> <span class="keyword">function</span> <span class="name">disabled</span>(<span class="name">op</span>) { <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"."</span> <span class="operator">&&</span> <span class="name">display</span>.<span class="name">text</span>.<span class="name">toString</span>().<span class="name">search</span>(/\./) <span class="operator">!=</span> -<span class="number">1</span>) { <span class="keyword">return</span> <span class="number">true</span> } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="name">squareRoot</span> <span class="operator">&&</span> <span class="name">display</span>.<span class="name">text</span>.<span class="name">toString</span>().<span class="name">search</span>(/-/) <span class="operator">!=</span> -<span class="number">1</span>) { <span class="keyword">return</span> <span class="number">true</span> } else { <span class="keyword">return</span> <span class="number">false</span> } } <span class="keyword">function</span> <span class="name">doOperation</span>(<span class="name">op</span>) { <span class="keyword">if</span> (<span class="name">disabled</span>(<span class="name">op</span>)) { <span class="keyword">return</span> } <span class="keyword">if</span> (<span class="name">op</span>.<span class="name">toString</span>().<span class="name">length</span><span class="operator">==</span><span class="number">1</span> <span class="operator">&&</span> ((<span class="name">op</span> <span class="operator">>=</span> <span class="string">"0"</span> <span class="operator">&&</span> <span class="name">op</span> <span class="operator"><=</span> <span class="string">"9"</span>) <span class="operator">||</span> <span class="name">op</span><span class="operator">==</span><span class="string">"."</span>) ) { <span class="keyword">if</span> (<span class="name">display</span>.<span class="name">text</span>.<span class="name">toString</span>().<span class="name">length</span> <span class="operator">>=</span> <span class="number">14</span>) <span class="keyword">return</span>; <span class="comment">// No arbitrary length numbers</span> <span class="keyword">if</span> (<span class="name">lastOp</span>.<span class="name">toString</span>().<span class="name">length</span> <span class="operator">==</span> <span class="number">1</span> <span class="operator">&&</span> ((<span class="name">lastOp</span> <span class="operator">>=</span> <span class="string">"0"</span> <span class="operator">&&</span> <span class="name">lastOp</span> <span class="operator"><=</span> <span class="string">"9"</span>) <span class="operator">||</span> <span class="name">lastOp</span> <span class="operator">==</span> <span class="string">"."</span>) ) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> <span class="name">display</span>.<span class="name">text</span> <span class="operator">+</span> <span class="name">op</span>.<span class="name">toString</span>() } else { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> <span class="name">op</span> } <span class="name">lastOp</span> <span class="operator">=</span> <span class="name">op</span> <span class="keyword">return</span> } <span class="name">lastOp</span> <span class="operator">=</span> <span class="name">op</span> <span class="keyword">if</span> (<span class="name">display</span>.<span class="name">currentOperation</span>.<span class="name">text</span> <span class="operator">==</span> <span class="string">"+"</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> <span class="name">Number</span>(<span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>()) <span class="operator">+</span> <span class="name">Number</span>(<span class="name">curVal</span>.<span class="name">valueOf</span>()) } else <span class="keyword">if</span> (<span class="name">display</span>.<span class="name">currentOperation</span>.<span class="name">text</span> <span class="operator">==</span> <span class="string">"-"</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> <span class="name">Number</span>(<span class="name">curVal</span>) <span class="operator">-</span> <span class="name">Number</span>(<span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>()) } else <span class="keyword">if</span> (<span class="name">display</span>.<span class="name">currentOperation</span>.<span class="name">text</span> <span class="operator">==</span> <span class="name">multiplication</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> <span class="name">Number</span>(<span class="name">curVal</span>) <span class="operator">*</span> <span class="name">Number</span>(<span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>()) } else <span class="keyword">if</span> (<span class="name">display</span>.<span class="name">currentOperation</span>.<span class="name">text</span> <span class="operator">==</span> <span class="name">division</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> <span class="name">Number</span>(<span class="name">Number</span>(<span class="name">curVal</span>) <span class="operator">/</span> <span class="name">Number</span>(<span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>())).<span class="name">toString</span>() } else <span class="keyword">if</span> (<span class="name">display</span>.<span class="name">currentOperation</span>.<span class="name">text</span> <span class="operator">==</span> <span class="string">"="</span>) { } <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"+"</span> <span class="operator">||</span> <span class="name">op</span> <span class="operator">==</span> <span class="string">"-"</span> <span class="operator">||</span> <span class="name">op</span> <span class="operator">==</span> <span class="name">multiplication</span> <span class="operator">||</span> <span class="name">op</span> <span class="operator">==</span> <span class="name">division</span>) { <span class="name">display</span>.<span class="name">currentOperation</span>.<span class="name">text</span> <span class="operator">=</span> <span class="name">op</span> <span class="name">curVal</span> <span class="operator">=</span> <span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>() <span class="keyword">return</span> } <span class="name">curVal</span> <span class="operator">=</span> <span class="number">0</span> <span class="name">display</span>.<span class="name">currentOperation</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">""</span> <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"1/x"</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> (<span class="number">1</span> <span class="operator">/</span> <span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>()).<span class="name">toString</span>() } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"x^2"</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> (<span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>() <span class="operator">*</span> <span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>()).<span class="name">toString</span>() } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"Abs"</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> (<span class="name">Math</span>.<span class="name">abs</span>(<span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>())).<span class="name">toString</span>() } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"Int"</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> (<span class="name">Math</span>.<span class="name">floor</span>(<span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>())).<span class="name">toString</span>() } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="name">plusminus</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> (<span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>() <span class="operator">*</span> -<span class="number">1</span>).<span class="name">toString</span>() } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="name">squareRoot</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> (<span class="name">Math</span>.<span class="name">sqrt</span>(<span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>())).<span class="name">toString</span>() } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"mc"</span>) { <span class="name">memory</span> <span class="operator">=</span> <span class="number">0</span>; } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"m+"</span>) { <span class="name">memory</span> <span class="operator">+=</span> <span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>() } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"mr"</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> <span class="name">memory</span>.<span class="name">toString</span>() } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"m-"</span>) { <span class="name">memory</span> <span class="operator">=</span> <span class="name">display</span>.<span class="name">text</span>.<span class="name">valueOf</span>() } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="name">leftArrow</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> <span class="name">display</span>.<span class="name">text</span>.<span class="name">toString</span>().<span class="name">slice</span>(<span class="number">0</span>, -<span class="number">1</span>) <span class="keyword">if</span> (<span class="name">display</span>.<span class="name">text</span>.<span class="name">length</span> <span class="operator">==</span> <span class="number">0</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">"0"</span> } } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"Off"</span>) { <span class="name">Qt</span>.<span class="name">quit</span>(); } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"C"</span>) { <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span> <span class="string">"0"</span> } else <span class="keyword">if</span> (<span class="name">op</span> <span class="operator">==</span> <span class="string">"AC"</span>) { <span class="name">curVal</span> <span class="operator">=</span> <span class="number">0</span> <span class="name">memory</span> <span class="operator">=</span> <span class="number">0</span> <span class="name">lastOp</span> <span class="operator">=</span> <span class="string">""</span> <span class="name">display</span>.<span class="name">text</span> <span class="operator">=</span><span class="string">"0"</span> } }</pre> </div> <!-- @@@demos/declarative/calculator/qml/calculator/CalculatorCore/calculator.js --> </div> </div> </div> <div class="ft"> <span></span> 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