define([
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"dojo/aspect", // aspect.after
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"dojo/_base/declare", // declare
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"dojo/dom-class", // domClass.add domClass.remove domClass.replace
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"dojo/_base/lang", // lang.mixin lang.hitch
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"dojo/on",
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"dojo/touch"
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], function(aspect, declare, domClass, lang, on, touch){
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// module:
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// dijit/tree/_dndContainer
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/*=====
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var __Args = {
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// summary:
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// A dict of parameters for Tree source configuration.
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// isSource: Boolean?
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// Can be used as a DnD source. Defaults to true.
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// accept: String[]
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// List of accepted types (text strings) for a target; defaults to
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// ["text", "treeNode"]
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// copyOnly: Boolean?
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// Copy items, if true, use a state of Ctrl key otherwise,
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// dragThreshold: Number
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// The move delay in pixels before detecting a drag; 0 by default
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// betweenThreshold: Integer
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// Distance from upper/lower edge of node to allow drop to reorder nodes
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};
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=====*/
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return declare("dijit.tree._dndContainer", null, {
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// summary:
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// This is a base class for `dijit/tree/_dndSelector`, and isn't meant to be used directly.
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// It's modeled after `dojo/dnd/Container`.
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// tags:
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// protected
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/*=====
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// current: TreeNode
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// The currently hovered TreeNode. Not set to anything for keyboard operation. (TODO: change?)
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current: null,
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=====*/
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constructor: function(tree, params){
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// summary:
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// A constructor of the Container
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// tree: Node
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// Node or node's id to build the container on
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// params: __Args
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// A dict of parameters, which gets mixed into the object
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// tags:
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// private
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this.tree = tree;
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this.node = tree.domNode; // TODO: rename; it's not a TreeNode but the whole Tree
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lang.mixin(this, params);
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// states
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this.containerState = "";
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domClass.add(this.node, "dojoDndContainer");
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// set up events
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this.events = [
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// Mouse (or touch) enter/leave on Tree itself
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on(this.node, touch.enter, lang.hitch(this, "onOverEvent")),
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on(this.node, touch.leave, lang.hitch(this, "onOutEvent")),
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// switching between TreeNodes
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aspect.after(this.tree, "_onNodeMouseEnter", lang.hitch(this, "onMouseOver"), true),
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aspect.after(this.tree, "_onNodeMouseLeave", lang.hitch(this, "onMouseOut"), true),
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// cancel text selection and text dragging
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on(this.node, "dragstart, selectstart", function(evt){
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evt.preventDefault();
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})
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];
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},
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destroy: function(){
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// summary:
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// Prepares this object to be garbage-collected
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var h;
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while(h = this.events.pop()){
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h.remove();
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}
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// this.clearItems();
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this.node = this.parent = null;
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},
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// mouse events
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onMouseOver: function(widget /*===== , evt =====*/){
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// summary:
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// Called when mouse is moved over a TreeNode
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// widget: TreeNode
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// evt: Event
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// tags:
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// protected
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this.current = widget;
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},
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onMouseOut: function(/*===== widget, evt =====*/){
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// summary:
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// Called when mouse is moved away from a TreeNode
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// widget: TreeNode
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// evt: Event
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// tags:
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// protected
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this.current = null;
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},
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_changeState: function(type, newState){
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// summary:
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// Changes a named state to new state value
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// type: String
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// A name of the state to change
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// newState: String
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// new state
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var prefix = "dojoDnd" + type;
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var state = type.toLowerCase() + "State";
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//domClass.replace(this.node, prefix + newState, prefix + this[state]);
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domClass.replace(this.node, prefix + newState, prefix + this[state]);
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this[state] = newState;
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},
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_addItemClass: function(node, type){
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// summary:
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// Adds a class with prefix "dojoDndItem"
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// node: Node
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// A node
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// type: String
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// A variable suffix for a class name
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domClass.add(node, "dojoDndItem" + type);
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},
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_removeItemClass: function(node, type){
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// summary:
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// Removes a class with prefix "dojoDndItem"
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// node: Node
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// A node
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// type: String
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// A variable suffix for a class name
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domClass.remove(node, "dojoDndItem" + type);
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},
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onOverEvent: function(){
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// summary:
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// This function is called once, when mouse is over our container
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// tags:
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// protected
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this._changeState("Container", "Over");
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},
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onOutEvent: function(){
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// summary:
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// This function is called once, when mouse is out of our container
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// tags:
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// protected
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this._changeState("Container", "");
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}
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});
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});
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