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yjs/doc/class/Operation.html
Kevin Jahns 355cfba78e improved sync process (HB._encode)
2014-08-08 04:46:28 +02:00

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<span class='title'>Operation</span>
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<h1>
Class:
Operation
</h1>
<table class='box'>
<tr>
<td>Defined in:</td>
<td>lib&#47;Types&#47;BasicTypes.coffee</td>
</tr>
</table>
<h2>Overview</h2>
<div class='docstring'>
<p>A generic interface to operations.</p><p>An operation has the following methods:
_encode: encodes an operation (needed only if instance of this operation is sent).
execute: execute the effects of this operations. Good examples are Insert-type and AddName-type
val: in the case that the operation holds a value</p><p>Furthermore an encodable operation has a parser.</p>
</div>
<div class='tags'>
</div>
<h2>Direct Known Subclasses</h2>
<p class='children'>
<a href='../class/Delete.html'>Delete</a>
<a href='../class/Insert.html'>Insert</a>
<a href='../class/Delimiter.html'>Delimiter</a>
</p>
<h2>Instance Method Summary</h2>
<ul class='summary'>
<li>
<span class='signature'>
<a href='#getUid-dynamic'>
#
(void)
<b>getUid</b><span>()</span>
</a>
</span>
<span class='desc'>
Computes a unique identifier (uid) that identifies this operation.
</span>
</li>
<li>
<span class='signature'>
<a href='#execute-dynamic'>
#
(void)
<b>execute</b><span>()</span>
</a>
</span>
<span class='note private title'>Private</span>
<span class='desc'>
Notify the all the listeners.
</span>
</li>
<li>
<span class='signature'>
<a href='#saveOperation-dynamic'>
~
(void)
<b>saveOperation</b><span>(name, op_uid)</span>
</a>
</span>
<span class='note private title'>Private</span>
<span class='desc'>
Operations may depend on other operations (linked lists, etc.).
</span>
</li>
<li>
<span class='signature'>
<a href='#validateSavedOperations-dynamic'>
#
(Boolean)
<b>validateSavedOperations</b><span>()</span>
</a>
</span>
<span class='note private title'>Private</span>
<span class='desc'>
After calling this function all not instantiated operations will be accessible.
</span>
</li>
</ul>
<h2>Constructor Details</h2>
<div class='methods'>
<div class='method_details'>
<p class='signature' id='constructor-dynamic'>
#
(void)
<b>constructor</b><span>(uid)</span>
<br>
</p>
<div class='tags'>
<h3>Parameters:</h3>
<ul class='param'>
<li>
<span class='name'>uid</span>
<span class='type'>
(
<tt>Object</tt>
)
</span>
&mdash;
<span class='desc'>A unique identifier. If uid is undefined, a new uid will be created. </span>
</li>
</ul>
<h3>See also:</h3>
<ul class='see'>
<li>
<a href='HistoryBuffer.getNextOperationIdentifier'>HistoryBuffer.getNextOperationIdentifier</a>
</li>
</ul>
</div>
</div>
</div>
<h2>Instance Method Details</h2>
<div class='methods'>
<div class='method_details'>
<p class='signature' id='getUid-dynamic'>
#
(void)
<b>getUid</b><span>()</span>
<br>
</p>
<div class='docstring'>
<p>Computes a unique identifier (uid) that identifies this operation.</p>
</div>
<div class='tags'>
</div>
</div>
<div class='method_details'>
<p class='signature' id='execute-dynamic'>
#
(void)
<b>execute</b><span>()</span>
<span class='note private'>Private</span>
<br>
</p>
<div class='docstring'>
<p>Notify the all the listeners.</p>
</div>
<div class='tags'>
</div>
</div>
<div class='method_details'>
<p class='signature' id='saveOperation-dynamic'>
~
(void)
<b>saveOperation</b><span>(name, op_uid)</span>
<br>
~
(void)
<b>saveOperation</b><span>(name, op)</span>
<br>
</p>
<div class='docstring'>
<p>Operations may depend on other operations (linked lists, etc.).
The saveOperation and validateSavedOperations methods provide
an easy way to refer to these operations via an uid or object reference.</p><p>For example: We can create a new Delete operation that deletes the operation $o like this</p><pre><code>- var d = new Delete(uid, $o); or
- var d = new Delete(uid, $o.getUid());
</code></pre><p>Either way we want to access $o via d.deletes. In the second case validateSavedOperations must be called first.</p>
</div>
<div class='tags'>
<div class='overloads'>
<h3>Overloads:</h3>
<div class='overload'>
<p class='signature'>
~
(void)
<b>saveOperation</b><span>(name, op_uid)</span>
</p>
<div class='tags'>
<h3>Parameters:</h3>
<ul class='param'>
<li>
<span class='name'>name</span>
<span class='type'>
(
<tt>String</tt>
)
</span>
&mdash;
<span class='desc'>The name of the operation. After validating (with validateSavedOperations) the instantiated operation will be accessible via this[name]. </span>
</li>
<li>
<span class='name'>op_uid</span>
<span class='type'>
(
<tt>Object</tt>
)
</span>
&mdash;
<span class='desc'>A uid that refers to an operation </span>
</li>
</ul>
</div>
</div>
<div class='overload'>
<p class='signature'>
~
(void)
<b>saveOperation</b><span>(name, op)</span>
</p>
<div class='tags'>
<h3>Parameters:</h3>
<ul class='param'>
<li>
<span class='name'>name</span>
<span class='type'>
(
<tt>String</tt>
)
</span>
&mdash;
<span class='desc'>The name of the operation. After calling this function op is accessible via this[name]. </span>
</li>
<li>
<span class='name'>op</span>
<span class='type'>
(
<tt><a href='../class/Operation.html'>Operation</a></tt>
)
</span>
&mdash;
<span class='desc'>An Operation object </span>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
<div class='method_details'>
<p class='signature' id='validateSavedOperations-dynamic'>
#
(Boolean)
<b>validateSavedOperations</b><span>()</span>
<span class='note private'>Private</span>
<br>
</p>
<div class='docstring'>
<p>After calling this function all not instantiated operations will be accessible.</p>
</div>
<div class='tags'>
<h3>Returns:</h3>
<ul class='return'>
<li>
<span class='type'></span>
(
<tt>Boolean</tt>
)
&mdash;
<span class='desc'>Whether it was possible to instantiate all operations. </span>
</li>
</ul>
<h3>See also:</h3>
<ul class='see'>
<li>
<a href='Operation.saveOperation'>Operation.saveOperation</a>
</li>
</ul>
</div>
</div>
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