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<title>The Gnome Chemistry Utils: gcp::Operation Class Reference</title>
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<div class="navpath"><a class="el" href="namespacegcp.html">gcp</a>::<a class="el" href="classgcp_1_1Operation.html">Operation</a>
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<h1>gcp::Operation Class Reference</h1><!-- doxytag: class="gcp::Operation" -->
<p><code>#include <<a class="el" href="operation_8h_source.html">gcp/operation.h</a>></code></p>
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Inheritance diagram for gcp::Operation:</div>
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<div class="center">
<img src="classgcp_1_1Operation.gif" usemap="#gcp::Operation_map" alt=""/>
<map id="gcp::Operation_map" name="gcp::Operation_map">
<area href="classgcp_1_1AddOperation.html" alt="gcp::AddOperation" shape="rect" coords="0,56,134,80"/>
<area href="classgcp_1_1DeleteOperation.html" alt="gcp::DeleteOperation" shape="rect" coords="144,56,278,80"/>
<area href="classgcp_1_1ModifyOperation.html" alt="gcp::ModifyOperation" shape="rect" coords="288,56,422,80"/>
</map>
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<p><a href="classgcp_1_1Operation-members.html">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgcp_1_1Operation.html#ac011147054c6ef84c9f58e5022598faf">Operation</a> (<a class="el" href="classgcp_1_1Document.html">Document</a> *pDoc, unsigned long ID)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgcp_1_1Operation.html#a28f5207dfb9c9f0f586f98d687f12600">Undo</a> ()=0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgcp_1_1Operation.html#a56848b25e63e60453b3273a12eed901e">Redo</a> ()=0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgcp_1_1Operation.html#ae713d95b1c4d6487a02ca6d3176b4f13">AddObject</a> (<a class="el" href="classgcu_1_1Object.html">gcu::Object</a> *pObject, unsigned type=0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgcp_1_1Operation.html#ab4e256613f7cb52a85cc4fc077b7fdf9">AddNode</a> (xmlNodePtr node, unsigned type=0)</td></tr>
<tr><td colspan="2"><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgcp_1_1Operation.html#a0cc4ca5b232a38642980fff597611e83">Add</a> (unsigned type=0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgcp_1_1Operation.html#a4666a4ff04bf033791b3c7cad89eeedf">Delete</a> (unsigned type=0)</td></tr>
<tr><td colspan="2"><h2>Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">xmlNodePtr * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgcp_1_1Operation.html#a2e4bb51639a31e1f434566acebe12fad">m_Nodes</a></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Base operation class for the Undo/Redo framework. This class is virtual since some methods are pure virtual. </p>
<p>Definition at line <a class="el" href="operation_8h_source.html#l00061">61</a> of file <a class="el" href="operation_8h_source.html">operation.h</a>.</p>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="ac011147054c6ef84c9f58e5022598faf"></a><!-- doxytag: member="gcp::Operation::Operation" ref="ac011147054c6ef84c9f58e5022598faf" args="(Document *pDoc, unsigned long ID)" -->
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<td class="memname">gcp::Operation::Operation </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classgcp_1_1Document.html">Document</a> * </td>
<td class="paramname"> <em>pDoc</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned long </td>
<td class="paramname"> <em>ID</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>pDoc</em> </td><td>a document. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>ID</em> </td><td>a unique operation ID for the document and the session.</td></tr>
</table>
</dd>
</dl>
<p>Creates a new operation. Operations should always created by calls to <a class="el" href="classgcp_1_1Document.html#a9929825e838d4b3e16a033e9393b4fa6">Document::GetNewOperation()</a>. </p>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a0cc4ca5b232a38642980fff597611e83"></a><!-- doxytag: member="gcp::Operation::Add" ref="a0cc4ca5b232a38642980fff597611e83" args="(unsigned type=0)" -->
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<td class="memname">void gcp::Operation::Add </td>
<td>(</td>
<td class="paramtype">unsigned </td>
<td class="paramname"> <em>type</em> = <code>0</code></td>
<td> ) </td>
<td><code> [protected]</code></td>
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<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>type</em> </td><td>a number indicationg the role of the stored objects.</td></tr>
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</dd>
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<p>The <em>type</em> argument is only significant for the <a class="el" href="classgcp_1_1ModifyOperation.html">gcp::ModifyOperation</a> class where 0 represent the state of the objects before the operation, and 1 the state of the objects after the operation.</p>
<p>Adds the stored objects to the document owning the operation. </p>
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<a class="anchor" id="ab4e256613f7cb52a85cc4fc077b7fdf9"></a><!-- doxytag: member="gcp::Operation::AddNode" ref="ab4e256613f7cb52a85cc4fc077b7fdf9" args="(xmlNodePtr node, unsigned type=0)" -->
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<td class="memname">virtual void gcp::Operation::AddNode </td>
<td>(</td>
<td class="paramtype">xmlNodePtr </td>
<td class="paramname"> <em>node</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned </td>
<td class="paramname"> <em>type</em> = <code>0</code></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [virtual]</code></td>
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<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>node</em> </td><td>an xml node related to the changes. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>type</em> </td><td>a number indicationg the role of the stored objects.</td></tr>
</table>
</dd>
</dl>
<p>The <em>type</em> argument is only significant for the <a class="el" href="classgcp_1_1ModifyOperation.html">gcp::ModifyOperation</a> class where 0 represent the state of the objects before the operation, and 1 the state of the objects after the operation.</p>
<p>Adds the node to the document owning the operation. This might be used when Objects are not available such as when editing text. </p>
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<a class="anchor" id="ae713d95b1c4d6487a02ca6d3176b4f13"></a><!-- doxytag: member="gcp::Operation::AddObject" ref="ae713d95b1c4d6487a02ca6d3176b4f13" args="(gcu::Object *pObject, unsigned type=0)" -->
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<td class="memname">virtual void gcp::Operation::AddObject </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classgcu_1_1Object.html">gcu::Object</a> * </td>
<td class="paramname"> <em>pObject</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned </td>
<td class="paramname"> <em>type</em> = <code>0</code></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [virtual]</code></td>
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<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>pObject</em> </td><td>an Object affected by the changes. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>type</em> </td><td>a number indicationg the role of the stored objects.</td></tr>
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</dd>
</dl>
<p>The <em>type</em> argument is only significant for the <a class="el" href="classgcp_1_1ModifyOperation.html">gcp::ModifyOperation</a> class where 0 represent the state of the objects before the operation, and 1 the state of the objects after the operation.</p>
<p>Adds an object to the operation. Typically, modifying an object whould need code like: </p>
<div class="fragment"><pre class="fragment"> Object *obj;
<span class="comment">// Initialize the object pointer so that it points to a valid object</span>
...
Document *doc = obj->GetDocument ();
<a class="code" href="classgcp_1_1Operation.html#ac011147054c6ef84c9f58e5022598faf">Operation</a> *op = doc->GetNewOperation (<a class="code" href="namespacegcp.html#aa8e6482c44ad2980e2054f056212c34faa40c4e6a93decefec7ed4bdb3f39299d">GCP_MODIFY_OPERATION</a>);
op->AddObject (obj, 0);
<span class="comment">// Modify the object</span>
...
op->AddObject (obj, 1);
doc->FinishOperation ();
</pre></div>
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<a class="anchor" id="a4666a4ff04bf033791b3c7cad89eeedf"></a><!-- doxytag: member="gcp::Operation::Delete" ref="a4666a4ff04bf033791b3c7cad89eeedf" args="(unsigned type=0)" -->
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<td class="memname">void gcp::Operation::Delete </td>
<td>(</td>
<td class="paramtype">unsigned </td>
<td class="paramname"> <em>type</em> = <code>0</code></td>
<td> ) </td>
<td><code> [protected]</code></td>
</tr>
</table>
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<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>type</em> </td><td>a number indicationg the role of the stored objects.</td></tr>
</table>
</dd>
</dl>
<p>The <em>type</em> argument is only significant for the <a class="el" href="classgcp_1_1ModifyOperation.html">gcp::ModifyOperation</a> class where 0 represent the state of the objects before the operation, and 1 the state of the objects after the operation.</p>
<p>Deletes the stored objects to the document owning the operation. </p>
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<a class="anchor" id="a56848b25e63e60453b3273a12eed901e"></a><!-- doxytag: member="gcp::Operation::Redo" ref="a56848b25e63e60453b3273a12eed901e" args="()=0" -->
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<td class="memname">virtual void gcp::Operation::Redo </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td><code> [pure virtual]</code></td>
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<p>Redo the changes represented by this operation. </p>
<p>Implemented in <a class="el" href="classgcp_1_1AddOperation.html#aaf12ab044554080715aecc3e5bc3082c">gcp::AddOperation</a>, <a class="el" href="classgcp_1_1DeleteOperation.html#a73f44294304cdc254798ff628ba2a8ea">gcp::DeleteOperation</a>, and <a class="el" href="classgcp_1_1ModifyOperation.html#ac59a5f760a739b5f189fb13b69e45184">gcp::ModifyOperation</a>.</p>
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<a class="anchor" id="a28f5207dfb9c9f0f586f98d687f12600"></a><!-- doxytag: member="gcp::Operation::Undo" ref="a28f5207dfb9c9f0f586f98d687f12600" args="()=0" -->
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<td class="memname">virtual void gcp::Operation::Undo </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td><code> [pure virtual]</code></td>
</tr>
</table>
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<p>Undo the changes represented by this operation. </p>
<p>Implemented in <a class="el" href="classgcp_1_1AddOperation.html#ad61d355fff6d754064e55c74fe907d06">gcp::AddOperation</a>, <a class="el" href="classgcp_1_1DeleteOperation.html#a50475f9addf33577065aabfe008c4abb">gcp::DeleteOperation</a>, and <a class="el" href="classgcp_1_1ModifyOperation.html#a1ea02ee5adf214f88d33c2c1ae8e2187">gcp::ModifyOperation</a>.</p>
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<hr/><h2>Member Data Documentation</h2>
<a class="anchor" id="a2e4bb51639a31e1f434566acebe12fad"></a><!-- doxytag: member="gcp::Operation::m_Nodes" ref="a2e4bb51639a31e1f434566acebe12fad" args="" -->
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<td class="memname">xmlNodePtr* <a class="el" href="classgcp_1_1Operation.html#a2e4bb51639a31e1f434566acebe12fad">gcp::Operation::m_Nodes</a><code> [protected]</code></td>
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<p>The xml nodes storing the changes. </p>
<p>Definition at line <a class="el" href="operation_8h_source.html#l00145">145</a> of file <a class="el" href="operation_8h_source.html">operation.h</a>.</p>
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</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="operation_8h_source.html">operation.h</a></li>
</ul>
</div>
<hr size="1"/><address style="text-align: right;"><small>Generated on Sun Sep 6 18:33:54 2009 for The Gnome Chemistry Utils by
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