| New file |
|---|
| 0,0 → 1,346 |
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| if(!dojo._hasResource["dijit._tree.dndSource"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. |
| dojo._hasResource["dijit._tree.dndSource"] = true; |
| dojo.provide("dijit._tree.dndSource"); |
| |
| dojo.require("dijit._tree.dndSelector"); |
| dojo.require("dojo.dnd.Manager"); |
| |
| dojo.declare("dijit._tree.dndSource", dijit._tree.dndSelector, { |
| // summary: a Source object, which can be used as a DnD source, or a DnD target |
| |
| // object attributes (for markup) |
| isSource: true, |
| copyOnly: false, |
| skipForm: false, |
| accept: ["text"], |
| |
| constructor: function(node, params){ |
| // summary: a constructor of the Source |
| // node: Node: node or node's id to build the source on |
| // params: Object: a dict of parameters, recognized parameters are: |
| // isSource: Boolean: can be used as a DnD source, if true; assumed to be "true" if omitted |
| // accept: Array: list of accepted types (text strings) for a target; assumed to be ["text"] if omitted |
| // horizontal: Boolean: a horizontal container, if true, vertical otherwise or when omitted |
| // copyOnly: Boolean: always copy items, if true, use a state of Ctrl key otherwise |
| // skipForm: Boolean: don't start the drag operation, if clicked on form elements |
| // the rest of parameters are passed to the selector |
| if(!params){ params = {}; } |
| dojo.mixin(this, params); |
| this.isSource = typeof params.isSource == "undefined" ? true : params.isSource; |
| var type = params.accept instanceof Array ? params.accept : ["text"]; |
| this.accept = null; |
| if(type.length){ |
| this.accept = {}; |
| for(var i = 0; i < type.length; ++i){ |
| this.accept[type[i]] = 1; |
| } |
| } |
| |
| // class-specific variables |
| this.isDragging = false; |
| this.mouseDown = false; |
| this.targetAnchor = null; |
| this.targetBox = null; |
| this.before = true; |
| |
| // states |
| this.sourceState = ""; |
| if(this.isSource){ |
| dojo.addClass(this.node, "dojoDndSource"); |
| } |
| this.targetState = ""; |
| if(this.accept){ |
| dojo.addClass(this.node, "dojoDndTarget"); |
| } |
| if(this.horizontal){ |
| dojo.addClass(this.node, "dojoDndHorizontal"); |
| } |
| // set up events |
| this.topics = [ |
| dojo.subscribe("/dnd/source/over", this, "onDndSourceOver"), |
| dojo.subscribe("/dnd/start", this, "onDndStart"), |
| dojo.subscribe("/dnd/drop", this, "onDndDrop"), |
| dojo.subscribe("/dnd/cancel", this, "onDndCancel") |
| ]; |
| }, |
| |
| startup: function(){ |
| }, |
| |
| // methods |
| checkAcceptance: function(source, nodes){ |
| // summary: checks, if the target can accept nodes from this source |
| // source: Object: the source which provides items |
| // nodes: Array: the list of transferred items |
| return true; // Boolean |
| }, |
| copyState: function(keyPressed){ |
| // summary: Returns true, if we need to copy items, false to move. |
| // It is separated to be overwritten dynamically, if needed. |
| // keyPressed: Boolean: the "copy" was pressed |
| return this.copyOnly || keyPressed; // Boolean |
| }, |
| destroy: function(){ |
| // summary: prepares the object to be garbage-collected |
| this.inherited("destroy",arguments); |
| dojo.forEach(this.topics, dojo.unsubscribe); |
| this.targetAnchor = null; |
| }, |
| |
| // markup methods |
| markupFactory: function(params, node){ |
| params._skipStartup = true; |
| return new dijit._tree.dndSource(node, params); |
| }, |
| |
| // mouse event processors |
| onMouseMove: function(e){ |
| // summary: event processor for onmousemove |
| // e: Event: mouse event |
| if(this.isDragging && this.targetState == "Disabled"){ return; } |
| this.inherited("onMouseMove", arguments); |
| var m = dojo.dnd.manager(); |
| if(this.isDragging){ |
| // calculate before/after |
| |
| if (this.allowBetween){ // not implemented yet for tree since it has no concept of order |
| var before = false; |
| if(this.current){ |
| if(!this.targetBox || this.targetAnchor != this.current){ |
| this.targetBox = { |
| xy: dojo.coords(this.current, true), |
| w: this.current.offsetWidth, |
| h: this.current.offsetHeight |
| }; |
| } |
| if(this.horizontal){ |
| before = (e.pageX - this.targetBox.xy.x) < (this.targetBox.w / 2); |
| }else{ |
| before = (e.pageY - this.targetBox.xy.y) < (this.targetBox.h / 2); |
| } |
| } |
| if(this.current != this.targetAnchor || before != this.before){ |
| this._markTargetAnchor(before); |
| m.canDrop(!this.current || m.source != this || !(this.current.id in this.selection)); |
| } |
| } |
| }else{ |
| if(this.mouseDown && this.isSource){ |
| var n = this.getSelectedNodes(); |
| var nodes=[]; |
| for (var i in n){ |
| nodes.push(n[i]); |
| } |
| if(nodes.length){ |
| m.startDrag(this, nodes, this.copyState(dojo.dnd.getCopyKeyState(e))); |
| } |
| } |
| } |
| }, |
| |
| onMouseDown: function(e){ |
| // summary: event processor for onmousedown |
| // e: Event: mouse event |
| this.mouseDown = true; |
| this.mouseButton = e.button; |
| this.inherited("onMouseDown",arguments); |
| }, |
| |
| onMouseUp: function(e){ |
| // summary: event processor for onmouseup |
| // e: Event: mouse event |
| if(this.mouseDown){ |
| this.mouseDown = false; |
| this.inherited("onMouseUp",arguments); |
| } |
| }, |
| |
| onMouseOver: function(e){ |
| // summary: event processor for onmouseover |
| // e: Event: mouse event |
| var n = e.relatedTarget; |
| while(n){ |
| if(n == this.node){ break; } |
| try{ |
| n = n.parentNode; |
| }catch(x){ |
| n = null; |
| } |
| } |
| if(!n){ |
| this._changeState("Container", "Over"); |
| this.onOverEvent(); |
| } |
| n = this._getChildByEvent(e); |
| if(this.current == n){ return; } |
| if(this.current){ this._removeItemClass(this.current, "Over"); } |
| if(n){ |
| this._addItemClass(n, "Over"); |
| if(this.isDragging){ |
| var m = dojo.dnd.manager(); |
| if(this.checkItemAcceptance(n,m.source)){ |
| m.canDrop(this.targetState != "Disabled" && (!this.current || m.source != this || !(this.current.id in this.selection))); |
| }else{ |
| m.canDrop(false); |
| } |
| } |
| }else{ |
| if(this.isDragging){ |
| var m = dojo.dnd.manager(); |
| if (m.source && this.checkAcceptance(m.source,m.source.getSelectedNodes())){ |
| m.canDrop(this.targetState != "Disabled" && (!this.current || m.source != this || !(this.current.id in this.selection))); |
| }else{ |
| m.canDrop(false); |
| } |
| } |
| } |
| this.current = n; |
| }, |
| |
| checkItemAcceptance: function(node, source){ |
| // summary: stub funciton to be overridden if one wants to check for the ability to drop at the node/item level |
| return true; |
| }, |
| |
| // topic event processors |
| onDndSourceOver: function(source){ |
| // summary: topic event processor for /dnd/source/over, called when detected a current source |
| // source: Object: the source which has the mouse over it |
| if(this != source){ |
| this.mouseDown = false; |
| if(this.targetAnchor){ |
| this._unmarkTargetAnchor(); |
| } |
| }else if(this.isDragging){ |
| var m = dojo.dnd.manager(); |
| m.canDrop(this.targetState != "Disabled" && (!this.current || m.source != this || !(this.current.id in this.selection))); |
| } |
| }, |
| onDndStart: function(source, nodes, copy){ |
| // summary: topic event processor for /dnd/start, called to initiate the DnD operation |
| // source: Object: the source which provides items |
| // nodes: Array: the list of transferred items |
| // copy: Boolean: copy items, if true, move items otherwise |
| |
| if(this.isSource){ |
| this._changeState("Source", this == source ? (copy ? "Copied" : "Moved") : ""); |
| } |
| var accepted = this.checkAcceptance(source, nodes); |
| |
| this._changeState("Target", accepted ? "" : "Disabled"); |
| |
| if(accepted){ |
| dojo.dnd.manager().overSource(this); |
| } |
| |
| this.isDragging = true; |
| }, |
| |
| itemCreator: function(nodes){ |
| var items = [] |
| |
| for(var i=0;i<nodes.length;i++){ |
| items.push({ |
| "name":nodes[i].textContent, |
| "id": nodes[i].id |
| }); |
| } |
| |
| return items; |
| }, |
| |
| onDndDrop: function(source, nodes, copy){ |
| // summary: topic event processor for /dnd/drop, called to finish the DnD operation |
| // source: Object: the source which provides items |
| // nodes: Array: the list of transferred items |
| // copy: Boolean: copy items, if true, move items otherwise |
| |
| if(this.containerState == "Over"){ |
| this.isDragging = false; |
| var target = this.current; |
| var items = this.itemCreator(nodes, target); |
| if(!target || target == this.tree.domNode){ |
| for(var i = 0; i < items.length; i++){ |
| this.tree.store.newItem(items[i], null); |
| } |
| }else{ |
| for(var i = 0; i < items.length; i++){ |
| pInfo = {parent: dijit.getEnclosingWidget(target).item, attribute: "children"}; |
| var newItem = this.tree.store.newItem(items[i], pInfo); |
| console.log("newItem:", newItem); |
| } |
| } |
| } |
| this.onDndCancel(); |
| }, |
| onDndCancel: function(){ |
| // summary: topic event processor for /dnd/cancel, called to cancel the DnD operation |
| if(this.targetAnchor){ |
| this._unmarkTargetAnchor(); |
| this.targetAnchor = null; |
| } |
| this.before = true; |
| this.isDragging = false; |
| this.mouseDown = false; |
| delete this.mouseButton; |
| this._changeState("Source", ""); |
| this._changeState("Target", ""); |
| }, |
| |
| // utilities |
| |
| onOverEvent: function(){ |
| // summary: this function is called once, when mouse is over our container |
| this.inherited("onOverEvent",arguments); |
| dojo.dnd.manager().overSource(this); |
| }, |
| onOutEvent: function(){ |
| // summary: this function is called once, when mouse is out of our container |
| this.inherited("onOutEvent",arguments); |
| dojo.dnd.manager().outSource(this); |
| }, |
| _markTargetAnchor: function(before){ |
| // summary: assigns a class to the current target anchor based on "before" status |
| // before: Boolean: insert before, if true, after otherwise |
| if(this.current == this.targetAnchor && this.before == before){ return; } |
| if(this.targetAnchor){ |
| this._removeItemClass(this.targetAnchor, this.before ? "Before" : "After"); |
| } |
| this.targetAnchor = this.current; |
| this.targetBox = null; |
| this.before = before; |
| if(this.targetAnchor){ |
| this._addItemClass(this.targetAnchor, this.before ? "Before" : "After"); |
| } |
| }, |
| _unmarkTargetAnchor: function(){ |
| // summary: removes a class of the current target anchor based on "before" status |
| if(!this.targetAnchor){ return; } |
| this._removeItemClass(this.targetAnchor, this.before ? "Before" : "After"); |
| this.targetAnchor = null; |
| this.targetBox = null; |
| this.before = true; |
| }, |
| _markDndStatus: function(copy){ |
| // summary: changes source's state based on "copy" status |
| this._changeState("Source", copy ? "Copied" : "Moved"); |
| } |
| }); |
| |
| dojo.declare("dijit._tree.dndTarget", dijit._tree.dndSource, { |
| // summary: a Target object, which can be used as a DnD target |
| |
| constructor: function(node, params){ |
| // summary: a constructor of the Target --- see the Source constructor for details |
| this.isSource = false; |
| dojo.removeClass(this.node, "dojoDndSource"); |
| }, |
| |
| // markup methods |
| markupFactory: function(params, node){ |
| params._skipStartup = true; |
| return new dijit._tree.dndTarget(node, params); |
| } |
| }); |
| |
| } |