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<a href="pypattyrn-module.html">Package pypattyrn</a> ::
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<a href="pypattyrn.behavioral-module.html">Package behavioral</a> ::
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Module memento
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<h1 class="epydoc">Source Code for <a href="pypattyrn.behavioral.memento-module.html">Module pypattyrn.behavioral.memento</a></h1>
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<pre class="py-src">
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<a name="L1"></a><tt class="py-lineno"> 1</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">copy</tt> <tt class="py-keyword">import</tt> <tt class="py-name">deepcopy</tt> </tt>
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<a name="Memento"></a><div id="Memento-def"><a name="L2"></a><tt class="py-lineno"> 2</tt> <tt class="py-line"> </tt>
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<a name="L3"></a><tt class="py-lineno"> 3</tt> <tt class="py-line"> </tt>
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<a name="L4"></a><tt class="py-lineno"> 4</tt> <a class="py-toggle" href="#" id="Memento-toggle" onclick="return toggle('Memento');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="pypattyrn.behavioral.memento.Memento-class.html">Memento</a><tt class="py-op">(</tt><tt class="py-base-class">object</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Memento-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="Memento-expanded"><a name="L5"></a><tt class="py-lineno"> 5</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L6"></a><tt class="py-lineno"> 6</tt> <tt class="py-line"><tt class="py-docstring"> Memento class as part of the Memento design pattern.</tt> </tt>
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<a name="L7"></a><tt class="py-lineno"> 7</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L8"></a><tt class="py-lineno"> 8</tt> <tt class="py-line"><tt class="py-docstring"> - External Usage documentation: U{https://github.com/tylerlaberge/PyPatterns/wiki/Behavioral-Pattern-Usage}</tt> </tt>
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<a name="L9"></a><tt class="py-lineno"> 9</tt> <tt class="py-line"><tt class="py-docstring"> - External Memento Pattern documentation: U{https://en.wikipedia.org/wiki/Memento_pattern}</tt> </tt>
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<a name="L10"></a><tt class="py-lineno">10</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="Memento.__init__"></a><div id="Memento.__init__-def"><a name="L11"></a><tt class="py-lineno">11</tt> <a class="py-toggle" href="#" id="Memento.__init__-toggle" onclick="return toggle('Memento.__init__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypattyrn.behavioral.memento.Memento-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">state</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Memento.__init__-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Memento.__init__-expanded"><a name="L12"></a><tt class="py-lineno">12</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L13"></a><tt class="py-lineno">13</tt> <tt class="py-line"><tt class="py-docstring"> Initialize a new Memento instance.</tt> </tt>
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<a name="L14"></a><tt class="py-lineno">14</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L15"></a><tt class="py-lineno">15</tt> <tt class="py-line"><tt class="py-docstring"> @param state: The state to save in this Memento.</tt> </tt>
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<a name="L16"></a><tt class="py-lineno">16</tt> <tt class="py-line"><tt class="py-docstring"> @type state: dict</tt> </tt>
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<a name="L17"></a><tt class="py-lineno">17</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="L18"></a><tt class="py-lineno">18</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__state</tt> <tt class="py-op">=</tt> <tt id="link-0" class="py-name" targets="Variable pypattyrn.behavioral.memento.Memento.state=pypattyrn.behavioral.memento.Memento-class.html#state"><a title="pypattyrn.behavioral.memento.Memento.state" class="py-name" href="#" onclick="return doclink('link-0', 'state', 'link-0');">state</a></tt> </tt>
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</div><a name="L19"></a><tt class="py-lineno">19</tt> <tt class="py-line"> </tt>
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<a name="L20"></a><tt class="py-lineno">20</tt> <tt class="py-line"> <tt class="py-decorator">@</tt><tt class="py-decorator">property</tt> </tt>
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<a name="Memento.state"></a><div id="Memento.state-def"><a name="L21"></a><tt class="py-lineno">21</tt> <a class="py-toggle" href="#" id="Memento.state-toggle" onclick="return toggle('Memento.state');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypattyrn.behavioral.memento.Memento-class.html#state">state</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Memento.state-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Memento.state-expanded"><a name="L22"></a><tt class="py-lineno">22</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__state</tt> </tt>
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</div></div><a name="L23"></a><tt class="py-lineno">23</tt> <tt class="py-line"> </tt>
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<a name="Originator"></a><div id="Originator-def"><a name="L24"></a><tt class="py-lineno">24</tt> <tt class="py-line"> </tt>
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<a name="L25"></a><tt class="py-lineno">25</tt> <a class="py-toggle" href="#" id="Originator-toggle" onclick="return toggle('Originator');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="pypattyrn.behavioral.memento.Originator-class.html">Originator</a><tt class="py-op">(</tt><tt class="py-base-class">object</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Originator-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="Originator-expanded"><a name="L26"></a><tt class="py-lineno">26</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L27"></a><tt class="py-lineno">27</tt> <tt class="py-line"><tt class="py-docstring"> Originator base class as part of the Memento design pattern.</tt> </tt>
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<a name="L28"></a><tt class="py-lineno">28</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L29"></a><tt class="py-lineno">29</tt> <tt class="py-line"><tt class="py-docstring"> - External Usage documentation: U{https://github.com/tylerlaberge/PyPatterns/wiki/Behavioral-Pattern-Usage}</tt> </tt>
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<a name="L30"></a><tt class="py-lineno">30</tt> <tt class="py-line"><tt class="py-docstring"> - External Mediator Pattern documentation: U{https://en.wikipedia.org/wiki/Memento_pattern}</tt> </tt>
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<a name="L31"></a><tt class="py-lineno">31</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="Originator.commit"></a><div id="Originator.commit-def"><a name="L32"></a><tt class="py-lineno">32</tt> <a class="py-toggle" href="#" id="Originator.commit-toggle" onclick="return toggle('Originator.commit');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypattyrn.behavioral.memento.Originator-class.html#commit">commit</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Originator.commit-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Originator.commit-expanded"><a name="L33"></a><tt class="py-lineno">33</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L34"></a><tt class="py-lineno">34</tt> <tt class="py-line"><tt class="py-docstring"> Commit this objects state to a memento.</tt> </tt>
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<a name="L35"></a><tt class="py-lineno">35</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L36"></a><tt class="py-lineno">36</tt> <tt class="py-line"><tt class="py-docstring"> @return: A memento instance with this objects state.</tt> </tt>
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<a name="L37"></a><tt class="py-lineno">37</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="L38"></a><tt class="py-lineno">38</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-1" class="py-name" targets="Class pypattyrn.behavioral.memento.Memento=pypattyrn.behavioral.memento.Memento-class.html"><a title="pypattyrn.behavioral.memento.Memento" class="py-name" href="#" onclick="return doclink('link-1', 'Memento', 'link-1');">Memento</a></tt><tt class="py-op">(</tt><tt class="py-name">deepcopy</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dict__</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
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</div><a name="L39"></a><tt class="py-lineno">39</tt> <tt class="py-line"> </tt>
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<a name="Originator.rollback"></a><div id="Originator.rollback-def"><a name="L40"></a><tt class="py-lineno">40</tt> <a class="py-toggle" href="#" id="Originator.rollback-toggle" onclick="return toggle('Originator.rollback');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypattyrn.behavioral.memento.Originator-class.html#rollback">rollback</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">memento</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Originator.rollback-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Originator.rollback-expanded"><a name="L41"></a><tt class="py-lineno">41</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L42"></a><tt class="py-lineno">42</tt> <tt class="py-line"><tt class="py-docstring"> Rollback this objects state to a previous state.</tt> </tt>
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<a name="L43"></a><tt class="py-lineno">43</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L44"></a><tt class="py-lineno">44</tt> <tt class="py-line"><tt class="py-docstring"> @param memento: The memento object holding the state to rollback to.</tt> </tt>
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<a name="L45"></a><tt class="py-lineno">45</tt> <tt class="py-line"><tt class="py-docstring"> @type memento: Memento</tt> </tt>
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<a name="L46"></a><tt class="py-lineno">46</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="L47"></a><tt class="py-lineno">47</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">__dict__</tt> <tt class="py-op">=</tt> <tt id="link-2" class="py-name" targets="Module pypattyrn.behavioral.memento=pypattyrn.behavioral.memento-module.html"><a title="pypattyrn.behavioral.memento" class="py-name" href="#" onclick="return doclink('link-2', 'memento', 'link-2');">memento</a></tt><tt class="py-op">.</tt><tt id="link-3" class="py-name"><a title="pypattyrn.behavioral.memento.Memento.state" class="py-name" href="#" onclick="return doclink('link-3', 'state', 'link-0');">state</a></tt> </tt>
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