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root / trunk / web / dojo / dijit / _HasDropDown.js @ 10

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/*
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        Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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        Available via Academic Free License >= 2.1 OR the modified BSD license.
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        see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dijit._HasDropDown"]){
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dojo._hasResource["dijit._HasDropDown"]=true;
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dojo.provide("dijit._HasDropDown");
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dojo.require("dijit._base.place");
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dojo.require("dijit._Widget");
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dojo.declare("dijit._HasDropDown",null,{_buttonNode:null,_arrowWrapperNode:null,_popupStateNode:null,_aroundNode:null,dropDown:null,autoWidth:true,forceWidth:false,maxHeight:0,dropDownPosition:["below","above"],_stopClickEvents:true,_onDropDownMouseDown:function(e){
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if(this.disabled||this.readOnly){
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return;
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}
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this._docHandler=this.connect(dojo.doc,"onmouseup","_onDropDownMouseUp");
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this.toggleDropDown();
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},_onDropDownMouseUp:function(e){
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if(e&&this._docHandler){
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this.disconnect(this._docHandler);
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}
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var _1=this.dropDown,_2=false;
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if(e&&this._opened){
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var c=dojo.position(this._buttonNode,true);
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if(!(e.pageX>=c.x&&e.pageX<=c.x+c.w)||!(e.pageY>=c.y&&e.pageY<=c.y+c.h)){
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var t=e.target;
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while(t&&!_2){
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if(dojo.hasClass(t,"dijitPopup")){
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_2=true;
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}else{
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t=t.parentNode;
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}
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}
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if(_2){
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t=e.target;
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if(_1.onItemClick){
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var _3;
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while(t&&!(_3=dijit.byNode(t))){
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t=t.parentNode;
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}
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if(_3&&_3.onClick&&_3.getParent){
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_3.getParent().onItemClick(_3,e);
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}
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}
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return;
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}
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}
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}
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if(this._opened&&_1.focus){
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window.setTimeout(dojo.hitch(_1,"focus"),1);
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}
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},_onDropDownClick:function(e){
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if(this._stopClickEvents){
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dojo.stopEvent(e);
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}
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},_setupDropdown:function(){
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this._buttonNode=this._buttonNode||this.focusNode||this.domNode;
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this._popupStateNode=this._popupStateNode||this.focusNode||this._buttonNode;
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this._aroundNode=this._aroundNode||this.domNode;
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this.connect(this._buttonNode,"onmousedown","_onDropDownMouseDown");
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this.connect(this._buttonNode,"onclick","_onDropDownClick");
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this.connect(this._buttonNode,"onkeydown","_onDropDownKeydown");
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this.connect(this._buttonNode,"onkeyup","_onKey");
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if(this._setStateClass){
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this.connect(this,"openDropDown","_setStateClass");
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this.connect(this,"closeDropDown","_setStateClass");
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}
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var _4={"after":this.isLeftToRight()?"Right":"Left","before":this.isLeftToRight()?"Left":"Right","above":"Up","below":"Down","left":"Left","right":"Right"}[this.dropDownPosition[0]]||this.dropDownPosition[0]||"Down";
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dojo.addClass(this._arrowWrapperNode||this._buttonNode,"dijit"+_4+"ArrowButton");
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},postCreate:function(){
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this._setupDropdown();
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this.inherited(arguments);
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},destroyDescendants:function(){
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if(this.dropDown){
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if(!this.dropDown._destroyed){
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this.dropDown.destroyRecursive();
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}
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delete this.dropDown;
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}
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this.inherited(arguments);
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},_onDropDownKeydown:function(e){
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if(e.keyCode==dojo.keys.DOWN_ARROW||e.keyCode==dojo.keys.ENTER||e.keyCode==dojo.keys.SPACE){
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e.preventDefault();
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}
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},_onKey:function(e){
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if(this.disabled||this.readOnly){
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return;
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}
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var d=this.dropDown;
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if(d&&this._opened&&d.handleKey){
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if(d.handleKey(e)===false){
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return;
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}
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}
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if(d&&this._opened&&e.keyCode==dojo.keys.ESCAPE){
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this.toggleDropDown();
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}else{
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if(d&&!this._opened&&(e.keyCode==dojo.keys.DOWN_ARROW||e.keyCode==dojo.keys.ENTER||e.keyCode==dojo.keys.SPACE)){
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this.toggleDropDown();
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if(d.focus){
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setTimeout(dojo.hitch(d,"focus"),1);
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}
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}
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}
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},_onBlur:function(){
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this.closeDropDown();
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this.inherited(arguments);
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},isLoaded:function(){
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return true;
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},loadDropDown:function(_5){
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_5();
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},toggleDropDown:function(){
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if(this.disabled||this.readOnly){
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return;
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}
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this.focus();
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var _6=this.dropDown;
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if(!_6){
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return;
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}
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if(!this._opened){
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if(!this.isLoaded()){
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this.loadDropDown(dojo.hitch(this,"openDropDown"));
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return;
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}else{
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this.openDropDown();
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}
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}else{
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this.closeDropDown();
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}
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},openDropDown:function(){
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var _7=this.dropDown;
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var _8=_7.domNode;
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var _9=this;
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if(!this._preparedNode){
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dijit.popup.moveOffScreen(_8);
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this._preparedNode=true;
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if(_8.style.width){
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this._explicitDDWidth=true;
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}
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if(_8.style.height){
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this._explicitDDHeight=true;
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}
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}
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if(this.maxHeight||this.forceWidth||this.autoWidth){
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var _a={display:"",visibility:"hidden"};
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if(!this._explicitDDWidth){
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_a.width="";
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}
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if(!this._explicitDDHeight){
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_a.height="";
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}
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dojo.style(_8,_a);
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var mb=dojo.marginBox(_8);
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var _b=(this.maxHeight&&mb.h>this.maxHeight);
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dojo.style(_8,{overflowX:"hidden",overflowY:_b?"auto":"hidden"});
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if(_b){
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mb.h=this.maxHeight;
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if("w" in mb){
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mb.w+=16;
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}
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}else{
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delete mb.h;
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}
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delete mb.t;
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delete mb.l;
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if(this.forceWidth){
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mb.w=this.domNode.offsetWidth;
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}else{
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if(this.autoWidth){
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mb.w=Math.max(mb.w,this.domNode.offsetWidth);
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}else{
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delete mb.w;
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}
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}
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if(dojo.isFunction(_7.resize)){
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_7.resize(mb);
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}else{
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dojo.marginBox(_8,mb);
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}
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}
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var _c=dijit.popup.open({parent:this,popup:_7,around:this._aroundNode,orient:dijit.getPopupAroundAlignment((this.dropDownPosition&&this.dropDownPosition.length)?this.dropDownPosition:["below"],this.isLeftToRight()),onExecute:function(){
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_9.closeDropDown(true);
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},onCancel:function(){
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_9.closeDropDown(true);
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},onClose:function(){
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dojo.attr(_9._popupStateNode,"popupActive",false);
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dojo.removeClass(_9._popupStateNode,"dijitHasDropDownOpen");
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_9._opened=false;
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_9.state="";
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}});
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dojo.attr(this._popupStateNode,"popupActive","true");
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dojo.addClass(_9._popupStateNode,"dijitHasDropDownOpen");
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this._opened=true;
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this.state="Opened";
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return _c;
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},closeDropDown:function(_d){
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if(this._opened){
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if(_d){
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this.focus();
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}
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dijit.popup.close(this.dropDown);
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this._opened=false;
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this.state="";
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}
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}});
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}