201 lines
No EOL
11 KiB
HTML
201 lines
No EOL
11 KiB
HTML
<html><head><title>DropZone.js</title><link rel="stylesheet" type="text/css" href="../resources/style.css" media="screen"/></head><body><h1>DropZone.js</h1><pre class="highlighted"><code><i>/**
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* @class Ext.dd.DropZone
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* @extends Ext.dd.DropTarget
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* This class provides a container DD instance that proxies <b>for</b> multiple child node targets.<br />
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* By <b>default</b>, <b>this</b> class requires that child nodes accepting drop are registered <b>with</b> {@link Ext.dd.Registry}.
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* @constructor
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* @param {String/HTMLElement/Element} el The container element
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* @param {Object} config
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*/</i>
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Ext.dd.DropZone = <b>function</b>(el, config){
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Ext.dd.DropZone.superclass.constructor.call(<b>this</b>, el, config);
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};
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Ext.extend(Ext.dd.DropZone, Ext.dd.DropTarget, {
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<i>/**
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* Returns a custom data object associated <b>with</b> the DOM node that is the target of the event. By <b>default</b>
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* <b>this</b> looks up the event target <b>in</b> the {@link Ext.dd.Registry}, although you can override <b>this</b> method to
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* provide your own custom lookup.
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* @param {Event} e The event
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* @<b>return</b> {Object} data The custom data
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*/</i>
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getTargetFromEvent : <b>function</b>(e){
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<b>return</b> Ext.dd.Registry.getTargetFromEvent(e);
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},
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<i>/**
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* Called internally when the DropZone determines that a {@link Ext.dd.DragSource} has entered a drop node
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* that it has registered. This method has no <b>default</b> implementation and should be overridden to provide
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* node-specific processing <b>if</b> necessary.
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* @param {Object} nodeData The custom data associated <b>with</b> the drop node (<b>this</b> is the same value returned from
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* {@link #getTargetFromEvent} <b>for</b> this node)
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* @param {Ext.dd.DragSource} source The drag source that was dragged over <b>this</b> drop zone
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* @param {Event} e The event
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* @param {Object} data An object containing arbitrary data supplied by the drag source
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*/</i>
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onNodeEnter : <b>function</b>(n, dd, e, data){
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},
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<i>/**
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* Called internally <b>while</b> the DropZone determines that a {@link Ext.dd.DragSource} is over a drop node
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* that it has registered. The <b>default</b> implementation returns <b>this</b>.dropNotAllowed, so it should be
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* overridden to provide the proper feedback.
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* @param {Object} nodeData The custom data associated <b>with</b> the drop node (<b>this</b> is the same value returned from
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* {@link #getTargetFromEvent} <b>for</b> this node)
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* @param {Ext.dd.DragSource} source The drag source that was dragged over <b>this</b> drop zone
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* @param {Event} e The event
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* @param {Object} data An object containing arbitrary data supplied by the drag source
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* @<b>return</b> {String} status The CSS class that communicates the drop status back to the source so that the
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* underlying {@link Ext.dd.StatusProxy} can be updated
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*/</i>
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onNodeOver : <b>function</b>(n, dd, e, data){
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<b>return</b> this.dropAllowed;
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},
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<i>/**
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* Called internally when the DropZone determines that a {@link Ext.dd.DragSource} has been dragged out of
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* the drop node without dropping. This method has no <b>default</b> implementation and should be overridden to provide
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* node-specific processing <b>if</b> necessary.
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* @param {Object} nodeData The custom data associated <b>with</b> the drop node (<b>this</b> is the same value returned from
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* {@link #getTargetFromEvent} <b>for</b> this node)
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* @param {Ext.dd.DragSource} source The drag source that was dragged over <b>this</b> drop zone
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* @param {Event} e The event
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* @param {Object} data An object containing arbitrary data supplied by the drag source
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*/</i>
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onNodeOut : <b>function</b>(n, dd, e, data){
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},
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<i>/**
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* Called internally when the DropZone determines that a {@link Ext.dd.DragSource} has been dropped onto
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* the drop node. The <b>default</b> implementation returns false, so it should be overridden to provide the
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* appropriate processing of the drop event and <b>return</b> true so that the drag source's repair action does not run.
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* @param {Object} nodeData The custom data associated <b>with</b> the drop node (<b>this</b> is the same value returned from
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* {@link #getTargetFromEvent} <b>for</b> this node)
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* @param {Ext.dd.DragSource} source The drag source that was dragged over <b>this</b> drop zone
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* @param {Event} e The event
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* @param {Object} data An object containing arbitrary data supplied by the drag source
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* @<b>return</b> {Boolean} True <b>if</b> the drop was valid, <b>else</b> false
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*/</i>
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onNodeDrop : <b>function</b>(n, dd, e, data){
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<b>return</b> false;
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},
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<i>/**
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* Called internally <b>while</b> the DropZone determines that a {@link Ext.dd.DragSource} is being dragged over it,
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* but not over any of its registered drop nodes. The <b>default</b> implementation returns <b>this</b>.dropNotAllowed, so
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* it should be overridden to provide the proper feedback <b>if</b> necessary.
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* @param {Ext.dd.DragSource} source The drag source that was dragged over <b>this</b> drop zone
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* @param {Event} e The event
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* @param {Object} data An object containing arbitrary data supplied by the drag source
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* @<b>return</b> {String} status The CSS class that communicates the drop status back to the source so that the
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* underlying {@link Ext.dd.StatusProxy} can be updated
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*/</i>
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onContainerOver : <b>function</b>(dd, e, data){
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<b>return</b> this.dropNotAllowed;
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},
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<i>/**
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* Called internally when the DropZone determines that a {@link Ext.dd.DragSource} has been dropped on it,
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* but not on any of its registered drop nodes. The <b>default</b> implementation returns false, so it should be
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* overridden to provide the appropriate processing of the drop event <b>if</b> you need the drop zone itself to
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* be able to accept drops. It should <b>return</b> true when valid so that the drag source's repair action does not run.
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* @param {Ext.dd.DragSource} source The drag source that was dragged over <b>this</b> drop zone
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* @param {Event} e The event
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* @param {Object} data An object containing arbitrary data supplied by the drag source
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* @<b>return</b> {Boolean} True <b>if</b> the drop was valid, <b>else</b> false
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*/</i>
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onContainerDrop : <b>function</b>(dd, e, data){
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<b>return</b> false;
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},
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<i>/**
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* The <b>function</b> a {@link Ext.dd.DragSource} calls once to notify <b>this</b> drop zone that the source is now over
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* the zone. The <b>default</b> implementation returns <b>this</b>.dropNotAllowed and expects that only registered drop
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* nodes can process drag drop operations, so <b>if</b> you need the drop zone itself to be able to process drops
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* you should override <b>this</b> method and provide a custom implementation.
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* @param {Ext.dd.DragSource} source The drag source that was dragged over <b>this</b> drop zone
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* @param {Event} e The event
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* @param {Object} data An object containing arbitrary data supplied by the drag source
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* @<b>return</b> {String} status The CSS class that communicates the drop status back to the source so that the
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* underlying {@link Ext.dd.StatusProxy} can be updated
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*/</i>
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notifyEnter : <b>function</b>(dd, e, data){
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<b>return</b> this.dropNotAllowed;
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},
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<i>/**
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* The <b>function</b> a {@link Ext.dd.DragSource} calls continuously <b>while</b> it is being dragged over the drop zone.
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* This method will be called on every mouse movement <b>while</b> the drag source is over the drop zone.
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* It will call {@link #onNodeOver} <b>while</b> the drag source is over a registered node, and will also automatically
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* delegate to the appropriate node-specific methods as necessary when the drag source enters and exits
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* registered nodes ({@link #onNodeEnter}, {@link #onNodeOut}). If the drag source is not currently over a
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* registered node, it will call {@link #onContainerOver}.
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* @param {Ext.dd.DragSource} source The drag source that was dragged over <b>this</b> drop zone
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* @param {Event} e The event
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* @param {Object} data An object containing arbitrary data supplied by the drag source
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* @<b>return</b> {String} status The CSS class that communicates the drop status back to the source so that the
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* underlying {@link Ext.dd.StatusProxy} can be updated
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*/</i>
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notifyOver : <b>function</b>(dd, e, data){
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<b>var</b> n = <b>this</b>.getTargetFromEvent(e);
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<b>if</b>(!n){ <i>// not over valid drop target</i>
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<b>if</b>(this.lastOverNode){
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<b>this</b>.onNodeOut(<b>this</b>.lastOverNode, dd, e, data);
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<b>this</b>.lastOverNode = null;
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}
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<b>return</b> this.onContainerOver(dd, e, data);
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}
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<b>if</b>(this.lastOverNode != n){
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<b>if</b>(this.lastOverNode){
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<b>this</b>.onNodeOut(<b>this</b>.lastOverNode, dd, e, data);
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}
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<b>this</b>.onNodeEnter(n, dd, e, data);
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<b>this</b>.lastOverNode = n;
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}
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<b>return</b> this.onNodeOver(n, dd, e, data);
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},
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<i>/**
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* The <b>function</b> a {@link Ext.dd.DragSource} calls once to notify <b>this</b> drop zone that the source has been dragged
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* out of the zone without dropping. If the drag source is currently over a registered node, the notification
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* will be delegated to {@link #onNodeOut} <b>for</b> node-specific handling, otherwise it will be ignored.
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* @param {Ext.dd.DragSource} source The drag source that was dragged over <b>this</b> drop target
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* @param {Event} e The event
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* @param {Object} data An object containing arbitrary data supplied by the drag zone
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*/</i>
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notifyOut : <b>function</b>(dd, e, data){
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<b>if</b>(this.lastOverNode){
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<b>this</b>.onNodeOut(<b>this</b>.lastOverNode, dd, e, data);
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<b>this</b>.lastOverNode = null;
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}
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},
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<i>/**
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* The <b>function</b> a {@link Ext.dd.DragSource} calls once to notify <b>this</b> drop zone that the dragged item has
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* been dropped on it. The drag zone will look up the target node based on the event passed <b>in</b>, and <b>if</b> there
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* is a node registered <b>for</b> that event, it will delegate to {@link #onNodeDrop} <b>for</b> node-specific handling,
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* otherwise it will call {@link #onContainerDrop}.
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* @param {Ext.dd.DragSource} source The drag source that was dragged over <b>this</b> drop zone
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* @param {Event} e The event
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* @param {Object} data An object containing arbitrary data supplied by the drag source
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* @<b>return</b> {Boolean} True <b>if</b> the drop was valid, <b>else</b> false
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*/</i>
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notifyDrop : <b>function</b>(dd, e, data){
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<b>if</b>(this.lastOverNode){
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<b>this</b>.onNodeOut(<b>this</b>.lastOverNode, dd, e, data);
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<b>this</b>.lastOverNode = null;
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}
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<b>var</b> n = <b>this</b>.getTargetFromEvent(e);
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<b>return</b> n ?
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<b>this</b>.onNodeDrop(n, dd, e, data) :
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<b>this</b>.onContainerDrop(dd, e, data);
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},
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<i>// private</i>
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triggerCacheRefresh : <b>function</b>(){
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Ext.dd.DDM.refreshCache(<b>this</b>.groups);
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}
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});</code></pre><hr><div style="font-size:10px;text-align:center;color:gray;">Ext - Copyright © 2006-2007 Ext JS, LLC<br />All rights reserved.</div>
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</body></html> |