[76] | 1 | /*! |
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| 2 | * Ext JS Library 3.4.0 |
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| 3 | * Copyright(c) 2006-2011 Sencha Inc. |
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| 4 | * licensing@sencha.com |
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| 5 | * http://www.sencha.com/license |
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| 6 | */ |
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| 7 | /** |
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| 8 | * @class Ext.dd.DragSource |
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| 9 | * @extends Ext.dd.DDProxy |
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| 10 | * A simple class that provides the basic implementation needed to make any element draggable. |
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| 11 | * @constructor |
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| 12 | * @param {Mixed} el The container element |
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| 13 | * @param {Object} config |
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| 14 | */ |
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| 15 | Ext.dd.DragSource = function(el, config){ |
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| 16 | this.el = Ext.get(el); |
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| 17 | if(!this.dragData){ |
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| 18 | this.dragData = {}; |
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| 19 | } |
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| 20 | |
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| 21 | Ext.apply(this, config); |
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| 22 | |
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| 23 | if(!this.proxy){ |
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| 24 | this.proxy = new Ext.dd.StatusProxy(); |
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| 25 | } |
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| 26 | Ext.dd.DragSource.superclass.constructor.call(this, this.el.dom, this.ddGroup || this.group, |
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| 27 | {dragElId : this.proxy.id, resizeFrame: false, isTarget: false, scroll: this.scroll === true}); |
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| 28 | |
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| 29 | this.dragging = false; |
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| 30 | }; |
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| 31 | |
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| 32 | Ext.extend(Ext.dd.DragSource, Ext.dd.DDProxy, { |
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| 33 | /** |
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| 34 | * @cfg {String} ddGroup |
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| 35 | * A named drag drop group to which this object belongs. If a group is specified, then this object will only |
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| 36 | * interact with other drag drop objects in the same group (defaults to undefined). |
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| 37 | */ |
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| 38 | /** |
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| 39 | * @cfg {String} dropAllowed |
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| 40 | * The CSS class returned to the drag source when drop is allowed (defaults to "x-dd-drop-ok"). |
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| 41 | */ |
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| 42 | dropAllowed : "x-dd-drop-ok", |
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| 43 | /** |
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| 44 | * @cfg {String} dropNotAllowed |
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| 45 | * The CSS class returned to the drag source when drop is not allowed (defaults to "x-dd-drop-nodrop"). |
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| 46 | */ |
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| 47 | dropNotAllowed : "x-dd-drop-nodrop", |
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| 48 | |
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| 49 | /** |
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| 50 | * Returns the data object associated with this drag source |
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| 51 | * @return {Object} data An object containing arbitrary data |
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| 52 | */ |
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| 53 | getDragData : function(e){ |
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| 54 | return this.dragData; |
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| 55 | }, |
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| 56 | |
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| 57 | // private |
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| 58 | onDragEnter : function(e, id){ |
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| 59 | var target = Ext.dd.DragDropMgr.getDDById(id); |
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| 60 | this.cachedTarget = target; |
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| 61 | if(this.beforeDragEnter(target, e, id) !== false){ |
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| 62 | if(target.isNotifyTarget){ |
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| 63 | var status = target.notifyEnter(this, e, this.dragData); |
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| 64 | this.proxy.setStatus(status); |
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| 65 | }else{ |
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| 66 | this.proxy.setStatus(this.dropAllowed); |
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| 67 | } |
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| 68 | |
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| 69 | if(this.afterDragEnter){ |
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| 70 | /** |
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| 71 | * An empty function by default, but provided so that you can perform a custom action |
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| 72 | * when the dragged item enters the drop target by providing an implementation. |
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| 73 | * @param {Ext.dd.DragDrop} target The drop target |
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| 74 | * @param {Event} e The event object |
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| 75 | * @param {String} id The id of the dragged element |
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| 76 | * @method afterDragEnter |
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| 77 | */ |
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| 78 | this.afterDragEnter(target, e, id); |
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| 79 | } |
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| 80 | } |
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| 81 | }, |
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| 82 | |
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| 83 | /** |
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| 84 | * An empty function by default, but provided so that you can perform a custom action |
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| 85 | * before the dragged item enters the drop target and optionally cancel the onDragEnter. |
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| 86 | * @param {Ext.dd.DragDrop} target The drop target |
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| 87 | * @param {Event} e The event object |
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| 88 | * @param {String} id The id of the dragged element |
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| 89 | * @return {Boolean} isValid True if the drag event is valid, else false to cancel |
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| 90 | */ |
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| 91 | beforeDragEnter : function(target, e, id){ |
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| 92 | return true; |
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| 93 | }, |
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| 94 | |
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| 95 | // private |
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| 96 | alignElWithMouse: function() { |
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| 97 | Ext.dd.DragSource.superclass.alignElWithMouse.apply(this, arguments); |
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| 98 | this.proxy.sync(); |
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| 99 | }, |
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| 100 | |
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| 101 | // private |
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| 102 | onDragOver : function(e, id){ |
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| 103 | var target = this.cachedTarget || Ext.dd.DragDropMgr.getDDById(id); |
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| 104 | if(this.beforeDragOver(target, e, id) !== false){ |
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| 105 | if(target.isNotifyTarget){ |
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| 106 | var status = target.notifyOver(this, e, this.dragData); |
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| 107 | this.proxy.setStatus(status); |
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| 108 | } |
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| 109 | |
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| 110 | if(this.afterDragOver){ |
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| 111 | /** |
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| 112 | * An empty function by default, but provided so that you can perform a custom action |
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| 113 | * while the dragged item is over the drop target by providing an implementation. |
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| 114 | * @param {Ext.dd.DragDrop} target The drop target |
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| 115 | * @param {Event} e The event object |
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| 116 | * @param {String} id The id of the dragged element |
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| 117 | * @method afterDragOver |
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| 118 | */ |
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| 119 | this.afterDragOver(target, e, id); |
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| 120 | } |
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| 121 | } |
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| 122 | }, |
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| 123 | |
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| 124 | /** |
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| 125 | * An empty function by default, but provided so that you can perform a custom action |
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| 126 | * while the dragged item is over the drop target and optionally cancel the onDragOver. |
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| 127 | * @param {Ext.dd.DragDrop} target The drop target |
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| 128 | * @param {Event} e The event object |
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| 129 | * @param {String} id The id of the dragged element |
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| 130 | * @return {Boolean} isValid True if the drag event is valid, else false to cancel |
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| 131 | */ |
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| 132 | beforeDragOver : function(target, e, id){ |
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| 133 | return true; |
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| 134 | }, |
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| 135 | |
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| 136 | // private |
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| 137 | onDragOut : function(e, id){ |
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| 138 | var target = this.cachedTarget || Ext.dd.DragDropMgr.getDDById(id); |
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| 139 | if(this.beforeDragOut(target, e, id) !== false){ |
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| 140 | if(target.isNotifyTarget){ |
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| 141 | target.notifyOut(this, e, this.dragData); |
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| 142 | } |
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| 143 | this.proxy.reset(); |
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| 144 | if(this.afterDragOut){ |
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| 145 | /** |
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| 146 | * An empty function by default, but provided so that you can perform a custom action |
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| 147 | * after the dragged item is dragged out of the target without dropping. |
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| 148 | * @param {Ext.dd.DragDrop} target The drop target |
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| 149 | * @param {Event} e The event object |
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| 150 | * @param {String} id The id of the dragged element |
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| 151 | * @method afterDragOut |
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| 152 | */ |
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| 153 | this.afterDragOut(target, e, id); |
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| 154 | } |
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| 155 | } |
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| 156 | this.cachedTarget = null; |
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| 157 | }, |
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| 158 | |
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| 159 | /** |
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| 160 | * An empty function by default, but provided so that you can perform a custom action before the dragged |
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| 161 | * item is dragged out of the target without dropping, and optionally cancel the onDragOut. |
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| 162 | * @param {Ext.dd.DragDrop} target The drop target |
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| 163 | * @param {Event} e The event object |
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| 164 | * @param {String} id The id of the dragged element |
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| 165 | * @return {Boolean} isValid True if the drag event is valid, else false to cancel |
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| 166 | */ |
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| 167 | beforeDragOut : function(target, e, id){ |
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| 168 | return true; |
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| 169 | }, |
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| 170 | |
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| 171 | // private |
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| 172 | onDragDrop : function(e, id){ |
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| 173 | var target = this.cachedTarget || Ext.dd.DragDropMgr.getDDById(id); |
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| 174 | if(this.beforeDragDrop(target, e, id) !== false){ |
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| 175 | if(target.isNotifyTarget){ |
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| 176 | if(target.notifyDrop(this, e, this.dragData)){ // valid drop? |
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| 177 | this.onValidDrop(target, e, id); |
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| 178 | }else{ |
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| 179 | this.onInvalidDrop(target, e, id); |
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| 180 | } |
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| 181 | }else{ |
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| 182 | this.onValidDrop(target, e, id); |
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| 183 | } |
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| 184 | |
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| 185 | if(this.afterDragDrop){ |
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| 186 | /** |
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| 187 | * An empty function by default, but provided so that you can perform a custom action |
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| 188 | * after a valid drag drop has occurred by providing an implementation. |
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| 189 | * @param {Ext.dd.DragDrop} target The drop target |
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| 190 | * @param {Event} e The event object |
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| 191 | * @param {String} id The id of the dropped element |
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| 192 | * @method afterDragDrop |
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| 193 | */ |
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| 194 | this.afterDragDrop(target, e, id); |
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| 195 | } |
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| 196 | } |
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| 197 | delete this.cachedTarget; |
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| 198 | }, |
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| 199 | |
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| 200 | /** |
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| 201 | * An empty function by default, but provided so that you can perform a custom action before the dragged |
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| 202 | * item is dropped onto the target and optionally cancel the onDragDrop. |
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| 203 | * @param {Ext.dd.DragDrop} target The drop target |
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| 204 | * @param {Event} e The event object |
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| 205 | * @param {String} id The id of the dragged element |
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| 206 | * @return {Boolean} isValid True if the drag drop event is valid, else false to cancel |
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| 207 | */ |
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| 208 | beforeDragDrop : function(target, e, id){ |
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| 209 | return true; |
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| 210 | }, |
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| 211 | |
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| 212 | // private |
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| 213 | onValidDrop : function(target, e, id){ |
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| 214 | this.hideProxy(); |
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| 215 | if(this.afterValidDrop){ |
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| 216 | /** |
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| 217 | * An empty function by default, but provided so that you can perform a custom action |
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| 218 | * after a valid drop has occurred by providing an implementation. |
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| 219 | * @param {Object} target The target DD |
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| 220 | * @param {Event} e The event object |
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| 221 | * @param {String} id The id of the dropped element |
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| 222 | * @method afterInvalidDrop |
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| 223 | */ |
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| 224 | this.afterValidDrop(target, e, id); |
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| 225 | } |
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| 226 | }, |
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| 227 | |
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| 228 | // private |
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| 229 | getRepairXY : function(e, data){ |
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| 230 | return this.el.getXY(); |
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| 231 | }, |
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| 232 | |
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| 233 | // private |
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| 234 | onInvalidDrop : function(target, e, id){ |
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| 235 | this.beforeInvalidDrop(target, e, id); |
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| 236 | if(this.cachedTarget){ |
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| 237 | if(this.cachedTarget.isNotifyTarget){ |
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| 238 | this.cachedTarget.notifyOut(this, e, this.dragData); |
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| 239 | } |
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| 240 | this.cacheTarget = null; |
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| 241 | } |
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| 242 | this.proxy.repair(this.getRepairXY(e, this.dragData), this.afterRepair, this); |
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| 243 | |
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| 244 | if(this.afterInvalidDrop){ |
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| 245 | /** |
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| 246 | * An empty function by default, but provided so that you can perform a custom action |
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| 247 | * after an invalid drop has occurred by providing an implementation. |
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| 248 | * @param {Event} e The event object |
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| 249 | * @param {String} id The id of the dropped element |
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| 250 | * @method afterInvalidDrop |
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| 251 | */ |
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| 252 | this.afterInvalidDrop(e, id); |
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| 253 | } |
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| 254 | }, |
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| 255 | |
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| 256 | // private |
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| 257 | afterRepair : function(){ |
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| 258 | if(Ext.enableFx){ |
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| 259 | this.el.highlight(this.hlColor || "c3daf9"); |
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| 260 | } |
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| 261 | this.dragging = false; |
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| 262 | }, |
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| 263 | |
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| 264 | /** |
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| 265 | * An empty function by default, but provided so that you can perform a custom action after an invalid |
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| 266 | * drop has occurred. |
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| 267 | * @param {Ext.dd.DragDrop} target The drop target |
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| 268 | * @param {Event} e The event object |
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| 269 | * @param {String} id The id of the dragged element |
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| 270 | * @return {Boolean} isValid True if the invalid drop should proceed, else false to cancel |
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| 271 | */ |
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| 272 | beforeInvalidDrop : function(target, e, id){ |
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| 273 | return true; |
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| 274 | }, |
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| 275 | |
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| 276 | // private |
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| 277 | handleMouseDown : function(e){ |
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| 278 | if(this.dragging) { |
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| 279 | return; |
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| 280 | } |
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| 281 | var data = this.getDragData(e); |
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| 282 | if(data && this.onBeforeDrag(data, e) !== false){ |
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| 283 | this.dragData = data; |
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| 284 | this.proxy.stop(); |
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| 285 | Ext.dd.DragSource.superclass.handleMouseDown.apply(this, arguments); |
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| 286 | } |
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| 287 | }, |
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| 288 | |
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| 289 | /** |
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| 290 | * An empty function by default, but provided so that you can perform a custom action before the initial |
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| 291 | * drag event begins and optionally cancel it. |
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| 292 | * @param {Object} data An object containing arbitrary data to be shared with drop targets |
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| 293 | * @param {Event} e The event object |
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| 294 | * @return {Boolean} isValid True if the drag event is valid, else false to cancel |
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| 295 | */ |
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| 296 | onBeforeDrag : function(data, e){ |
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| 297 | return true; |
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| 298 | }, |
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| 299 | |
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| 300 | /** |
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| 301 | * An empty function by default, but provided so that you can perform a custom action once the initial |
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| 302 | * drag event has begun. The drag cannot be canceled from this function. |
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| 303 | * @param {Number} x The x position of the click on the dragged object |
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| 304 | * @param {Number} y The y position of the click on the dragged object |
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| 305 | */ |
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| 306 | onStartDrag : Ext.emptyFn, |
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| 307 | |
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| 308 | // private override |
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| 309 | startDrag : function(x, y){ |
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| 310 | this.proxy.reset(); |
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| 311 | this.dragging = true; |
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| 312 | this.proxy.update(""); |
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| 313 | this.onInitDrag(x, y); |
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| 314 | this.proxy.show(); |
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| 315 | }, |
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| 316 | |
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| 317 | // private |
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| 318 | onInitDrag : function(x, y){ |
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| 319 | var clone = this.el.dom.cloneNode(true); |
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| 320 | clone.id = Ext.id(); // prevent duplicate ids |
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| 321 | this.proxy.update(clone); |
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| 322 | this.onStartDrag(x, y); |
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| 323 | return true; |
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| 324 | }, |
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| 325 | |
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| 326 | /** |
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| 327 | * Returns the drag source's underlying {@link Ext.dd.StatusProxy} |
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| 328 | * @return {Ext.dd.StatusProxy} proxy The StatusProxy |
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| 329 | */ |
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| 330 | getProxy : function(){ |
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| 331 | return this.proxy; |
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| 332 | }, |
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| 333 | |
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| 334 | /** |
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| 335 | * Hides the drag source's {@link Ext.dd.StatusProxy} |
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| 336 | */ |
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| 337 | hideProxy : function(){ |
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| 338 | this.proxy.hide(); |
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| 339 | this.proxy.reset(true); |
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| 340 | this.dragging = false; |
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| 341 | }, |
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| 342 | |
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| 343 | // private |
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| 344 | triggerCacheRefresh : function(){ |
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| 345 | Ext.dd.DDM.refreshCache(this.groups); |
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| 346 | }, |
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| 347 | |
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| 348 | // private - override to prevent hiding |
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| 349 | b4EndDrag: function(e) { |
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| 350 | }, |
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| 351 | |
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| 352 | // private - override to prevent moving |
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| 353 | endDrag : function(e){ |
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| 354 | this.onEndDrag(this.dragData, e); |
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| 355 | }, |
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| 356 | |
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| 357 | // private |
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| 358 | onEndDrag : function(data, e){ |
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| 359 | }, |
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| 360 | |
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| 361 | // private - pin to cursor |
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| 362 | autoOffset : function(x, y) { |
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| 363 | this.setDelta(-12, -20); |
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| 364 | }, |
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| 365 | |
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| 366 | destroy: function(){ |
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| 367 | Ext.dd.DragSource.superclass.destroy.call(this); |
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| 368 | Ext.destroy(this.proxy); |
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| 369 | } |
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| 370 | }); |
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