tt-rss/lib/dijit/Dialog.js
2011-11-08 20:40:44 +04:00

611 lines
19 KiB
JavaScript

/*
Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
Available via Academic Free License >= 2.1 OR the modified BSD license.
see: http://dojotoolkit.org/license for details
*/
if(!dojo._hasResource["dijit.Dialog"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dijit.Dialog"] = true;
dojo.provide("dijit.Dialog");
dojo.require("dojo.dnd.move");
dojo.require("dojo.dnd.TimedMoveable");
dojo.require("dojo.fx");
dojo.require("dojo.window");
dojo.require("dijit._Widget");
dojo.require("dijit._Templated");
dojo.require("dijit._CssStateMixin");
dojo.require("dijit.form._FormMixin");
dojo.require("dijit._DialogMixin");
dojo.require("dijit.DialogUnderlay");
dojo.require("dijit.layout.ContentPane");
dojo.requireLocalization("dijit", "common", null, "ROOT,ar,ca,cs,da,de,el,es,fi,fr,he,hu,it,ja,kk,ko,nb,nl,pl,pt,pt-pt,ro,ru,sk,sl,sv,th,tr,zh,zh-tw");
dojo.require("dijit.TooltipDialog");
// dijit/TooltipDialog required for back-compat. TODO: remove in 2.0
/*=====
dijit._underlay = function(kwArgs){
// summary:
// A shared instance of a `dijit.DialogUnderlay`
//
// description:
// A shared instance of a `dijit.DialogUnderlay` created and
// used by `dijit.Dialog`, though never created until some Dialog
// or subclass thereof is shown.
};
=====*/
dojo.declare(
"dijit._DialogBase",
[dijit._Templated, dijit.form._FormMixin, dijit._DialogMixin, dijit._CssStateMixin],
{
// summary:
// A modal dialog Widget
//
// description:
// Pops up a modal dialog window, blocking access to the screen
// and also graying out the screen Dialog is extended from
// ContentPane so it supports all the same parameters (href, etc.)
//
// example:
// | <div dojoType="dijit.Dialog" href="test.html"></div>
//
// example:
// | var foo = new dijit.Dialog({ title: "test dialog", content: "test content" };
// | dojo.body().appendChild(foo.domNode);
// | foo.startup();
templateString: dojo.cache("dijit", "templates/Dialog.html", "<div class=\"dijitDialog\" role=\"dialog\" aria-labelledby=\"${id}_title\">\n\t<div dojoAttachPoint=\"titleBar\" class=\"dijitDialogTitleBar\">\n\t<span dojoAttachPoint=\"titleNode\" class=\"dijitDialogTitle\" id=\"${id}_title\"></span>\n\t<span dojoAttachPoint=\"closeButtonNode\" class=\"dijitDialogCloseIcon\" dojoAttachEvent=\"ondijitclick: onCancel\" title=\"${buttonCancel}\" role=\"button\" tabIndex=\"-1\">\n\t\t<span dojoAttachPoint=\"closeText\" class=\"closeText\" title=\"${buttonCancel}\">x</span>\n\t</span>\n\t</div>\n\t\t<div dojoAttachPoint=\"containerNode\" class=\"dijitDialogPaneContent\"></div>\n</div>\n"),
baseClass: "dijitDialog",
cssStateNodes: {
closeButtonNode: "dijitDialogCloseIcon"
},
attributeMap: dojo.delegate(dijit._Widget.prototype.attributeMap, {
title: [
{ node: "titleNode", type: "innerHTML" },
{ node: "titleBar", type: "attribute" }
],
"aria-describedby":""
}),
// open: [readonly] Boolean
// True if Dialog is currently displayed on screen.
open: false,
// duration: Integer
// The time in milliseconds it takes the dialog to fade in and out
duration: dijit.defaultDuration,
// refocus: Boolean
// A Toggle to modify the default focus behavior of a Dialog, which
// is to re-focus the element which had focus before being opened.
// False will disable refocusing. Default: true
refocus: true,
// autofocus: Boolean
// A Toggle to modify the default focus behavior of a Dialog, which
// is to focus on the first dialog element after opening the dialog.
// False will disable autofocusing. Default: true
autofocus: true,
// _firstFocusItem: [private readonly] DomNode
// The pointer to the first focusable node in the dialog.
// Set by `dijit._DialogMixin._getFocusItems`.
_firstFocusItem: null,
// _lastFocusItem: [private readonly] DomNode
// The pointer to which node has focus prior to our dialog.
// Set by `dijit._DialogMixin._getFocusItems`.
_lastFocusItem: null,
// doLayout: [protected] Boolean
// Don't change this parameter from the default value.
// This ContentPane parameter doesn't make sense for Dialog, since Dialog
// is never a child of a layout container, nor can you specify the size of
// Dialog in order to control the size of an inner widget.
doLayout: false,
// draggable: Boolean
// Toggles the moveable aspect of the Dialog. If true, Dialog
// can be dragged by it's title. If false it will remain centered
// in the viewport.
draggable: true,
//aria-describedby: String
// Allows the user to add an aria-describedby attribute onto the dialog. The value should
// be the id of the container element of text that describes the dialog purpose (usually
// the first text in the dialog).
// <div dojoType="dijit.Dialog" aria-describedby="intro" .....>
// <div id="intro">Introductory text</div>
// <div>rest of dialog contents</div>
// </div>
"aria-describedby":"",
postMixInProperties: function(){
var _nlsResources = dojo.i18n.getLocalization("dijit", "common");
dojo.mixin(this, _nlsResources);
this.inherited(arguments);
},
postCreate: function(){
dojo.style(this.domNode, {
display: "none",
position:"absolute"
});
dojo.body().appendChild(this.domNode);
this.inherited(arguments);
this.connect(this, "onExecute", "hide");
this.connect(this, "onCancel", "hide");
this._modalconnects = [];
},
onLoad: function(){
// summary:
// Called when data has been loaded from an href.
// Unlike most other callbacks, this function can be connected to (via `dojo.connect`)
// but should *not* be overridden.
// tags:
// callback
// when href is specified we need to reposition the dialog after the data is loaded
// and find the focusable elements
this._position();
if(this.autofocus && dijit._DialogLevelManager.isTop(this)){
this._getFocusItems(this.domNode);
dijit.focus(this._firstFocusItem);
}
this.inherited(arguments);
},
_endDrag: function(e){
// summary:
// Called after dragging the Dialog. Saves the position of the dialog in the viewport.
// tags:
// private
if(e && e.node && e.node === this.domNode){
this._relativePosition = dojo.position(e.node);
}
},
_setup: function(){
// summary:
// Stuff we need to do before showing the Dialog for the first
// time (but we defer it until right beforehand, for
// performance reasons).
// tags:
// private
var node = this.domNode;
if(this.titleBar && this.draggable){
this._moveable = (dojo.isIE == 6) ?
new dojo.dnd.TimedMoveable(node, { handle: this.titleBar }) : // prevent overload, see #5285
new dojo.dnd.Moveable(node, { handle: this.titleBar, timeout: 0 });
this._dndListener = dojo.subscribe("/dnd/move/stop",this,"_endDrag");
}else{
dojo.addClass(node,"dijitDialogFixed");
}
this.underlayAttrs = {
dialogId: this.id,
"class": dojo.map(this["class"].split(/\s/), function(s){ return s+"_underlay"; }).join(" ")
};
},
_size: function(){
// summary:
// If necessary, shrink dialog contents so dialog fits in viewport
// tags:
// private
this._checkIfSingleChild();
// If we resized the dialog contents earlier, reset them back to original size, so
// that if the user later increases the viewport size, the dialog can display w/out a scrollbar.
// Need to do this before the dojo.marginBox(this.domNode) call below.
if(this._singleChild){
if(this._singleChildOriginalStyle){
this._singleChild.domNode.style.cssText = this._singleChildOriginalStyle;
}
delete this._singleChildOriginalStyle;
}else{
dojo.style(this.containerNode, {
width:"auto",
height:"auto"
});
}
var mb = dojo._getMarginSize(this.domNode);
var viewport = dojo.window.getBox();
if(mb.w >= viewport.w || mb.h >= viewport.h){
// Reduce size of dialog contents so that dialog fits in viewport
var w = Math.min(mb.w, Math.floor(viewport.w * 0.75)),
h = Math.min(mb.h, Math.floor(viewport.h * 0.75));
if(this._singleChild && this._singleChild.resize){
this._singleChildOriginalStyle = this._singleChild.domNode.style.cssText;
this._singleChild.resize({w: w, h: h});
}else{
dojo.style(this.containerNode, {
width: w + "px",
height: h + "px",
overflow: "auto",
position: "relative" // workaround IE bug moving scrollbar or dragging dialog
});
}
}else{
if(this._singleChild && this._singleChild.resize){
this._singleChild.resize();
}
}
},
_position: function(){
// summary:
// Position modal dialog in the viewport. If no relative offset
// in the viewport has been determined (by dragging, for instance),
// center the node. Otherwise, use the Dialog's stored relative offset,
// and position the node to top: left: values based on the viewport.
// tags:
// private
if(!dojo.hasClass(dojo.body(),"dojoMove")){
var node = this.domNode,
viewport = dojo.window.getBox(),
p = this._relativePosition,
bb = p ? null : dojo._getBorderBox(node),
l = Math.floor(viewport.l + (p ? p.x : (viewport.w - bb.w) / 2)),
t = Math.floor(viewport.t + (p ? p.y : (viewport.h - bb.h) / 2))
;
dojo.style(node,{
left: l + "px",
top: t + "px"
});
}
},
_onKey: function(/*Event*/ evt){
// summary:
// Handles the keyboard events for accessibility reasons
// tags:
// private
if(evt.charOrCode){
var dk = dojo.keys;
var node = evt.target;
if(evt.charOrCode === dk.TAB){
this._getFocusItems(this.domNode);
}
var singleFocusItem = (this._firstFocusItem == this._lastFocusItem);
// see if we are shift-tabbing from first focusable item on dialog
if(node == this._firstFocusItem && evt.shiftKey && evt.charOrCode === dk.TAB){
if(!singleFocusItem){
dijit.focus(this._lastFocusItem); // send focus to last item in dialog
}
dojo.stopEvent(evt);
}else if(node == this._lastFocusItem && evt.charOrCode === dk.TAB && !evt.shiftKey){
if(!singleFocusItem){
dijit.focus(this._firstFocusItem); // send focus to first item in dialog
}
dojo.stopEvent(evt);
}else{
// see if the key is for the dialog
while(node){
if(node == this.domNode || dojo.hasClass(node, "dijitPopup")){
if(evt.charOrCode == dk.ESCAPE){
this.onCancel();
}else{
return; // just let it go
}
}
node = node.parentNode;
}
// this key is for the disabled document window
if(evt.charOrCode !== dk.TAB){ // allow tabbing into the dialog for a11y
dojo.stopEvent(evt);
// opera won't tab to a div
}else if(!dojo.isOpera){
try{
this._firstFocusItem.focus();
}catch(e){ /*squelch*/ }
}
}
}
},
show: function(){
// summary:
// Display the dialog
// returns: dojo.Deferred
// Deferred object that resolves when the display animation is complete
if(this.open){ return; }
if(!this._started){
this.startup();
}
// first time we show the dialog, there's some initialization stuff to do
if(!this._alreadyInitialized){
this._setup();
this._alreadyInitialized=true;
}
if(this._fadeOutDeferred){
this._fadeOutDeferred.cancel();
}
this._modalconnects.push(dojo.connect(window, "onscroll", this, "layout"));
this._modalconnects.push(dojo.connect(window, "onresize", this, function(){
// IE gives spurious resize events and can actually get stuck
// in an infinite loop if we don't ignore them
var viewport = dojo.window.getBox();
if(!this._oldViewport ||
viewport.h != this._oldViewport.h ||
viewport.w != this._oldViewport.w){
this.layout();
this._oldViewport = viewport;
}
}));
this._modalconnects.push(dojo.connect(this.domNode, "onkeypress", this, "_onKey"));
dojo.style(this.domNode, {
opacity:0,
display:""
});
this._set("open", true);
this._onShow(); // lazy load trigger
this._size();
this._position();
// fade-in Animation object, setup below
var fadeIn;
this._fadeInDeferred = new dojo.Deferred(dojo.hitch(this, function(){
fadeIn.stop();
delete this._fadeInDeferred;
}));
fadeIn = dojo.fadeIn({
node: this.domNode,
duration: this.duration,
beforeBegin: dojo.hitch(this, function(){
dijit._DialogLevelManager.show(this, this.underlayAttrs);
}),
onEnd: dojo.hitch(this, function(){
if(this.autofocus && dijit._DialogLevelManager.isTop(this)){
// find focusable items each time dialog is shown since if dialog contains a widget the
// first focusable items can change
this._getFocusItems(this.domNode);
dijit.focus(this._firstFocusItem);
}
this._fadeInDeferred.callback(true);
delete this._fadeInDeferred;
})
}).play();
return this._fadeInDeferred;
},
hide: function(){
// summary:
// Hide the dialog
// returns: dojo.Deferred
// Deferred object that resolves when the hide animation is complete
// if we haven't been initialized yet then we aren't showing and we can just return
if(!this._alreadyInitialized){
return;
}
if(this._fadeInDeferred){
this._fadeInDeferred.cancel();
}
// fade-in Animation object, setup below
var fadeOut;
this._fadeOutDeferred = new dojo.Deferred(dojo.hitch(this, function(){
fadeOut.stop();
delete this._fadeOutDeferred;
}));
fadeOut = dojo.fadeOut({
node: this.domNode,
duration: this.duration,
onEnd: dojo.hitch(this, function(){
this.domNode.style.display = "none";
dijit._DialogLevelManager.hide(this);
this.onHide();
this._fadeOutDeferred.callback(true);
delete this._fadeOutDeferred;
})
}).play();
if(this._scrollConnected){
this._scrollConnected = false;
}
dojo.forEach(this._modalconnects, dojo.disconnect);
this._modalconnects = [];
if(this._relativePosition){
delete this._relativePosition;
}
this._set("open", false);
return this._fadeOutDeferred;
},
layout: function(){
// summary:
// Position the Dialog and the underlay
// tags:
// private
if(this.domNode.style.display != "none"){
if(dijit._underlay){ // avoid race condition during show()
dijit._underlay.layout();
}
this._position();
}
},
destroy: function(){
if(this._fadeInDeferred){
this._fadeInDeferred.cancel();
}
if(this._fadeOutDeferred){
this._fadeOutDeferred.cancel();
}
if(this._moveable){
this._moveable.destroy();
}
if(this._dndListener){
dojo.unsubscribe(this._dndListener);
}
dojo.forEach(this._modalconnects, dojo.disconnect);
dijit._DialogLevelManager.hide(this);
this.inherited(arguments);
}
}
);
dojo.declare(
"dijit.Dialog",
[dijit.layout.ContentPane, dijit._DialogBase],
{}
);
dijit._DialogLevelManager = {
// summary:
// Controls the various active "levels" on the page, starting with the
// stuff initially visible on the page (at z-index 0), and then having an entry for
// each Dialog shown.
show: function(/*dijit._Widget*/ dialog, /*Object*/ underlayAttrs){
// summary:
// Call right before fade-in animation for new dialog.
// Saves current focus, displays/adjusts underlay for new dialog,
// and sets the z-index of the dialog itself.
//
// New dialog will be displayed on top of all currently displayed dialogs.
//
// Caller is responsible for setting focus in new dialog after the fade-in
// animation completes.
var ds = dijit._dialogStack;
// Save current focus
ds[ds.length-1].focus = dijit.getFocus(dialog);
// Display the underlay, or if already displayed then adjust for this new dialog
var underlay = dijit._underlay;
if(!underlay || underlay._destroyed){
underlay = dijit._underlay = new dijit.DialogUnderlay(underlayAttrs);
}else{
underlay.set(dialog.underlayAttrs);
}
// Set z-index a bit above previous dialog
var zIndex = ds[ds.length-1].dialog ? ds[ds.length-1].zIndex + 2 : 950;
if(ds.length == 1){ // first dialog
underlay.show();
}
dojo.style(dijit._underlay.domNode, 'zIndex', zIndex - 1);
// Dialog
dojo.style(dialog.domNode, 'zIndex', zIndex);
ds.push({dialog: dialog, underlayAttrs: underlayAttrs, zIndex: zIndex});
},
hide: function(/*dijit._Widget*/ dialog){
// summary:
// Called when the specified dialog is hidden/destroyed, after the fade-out
// animation ends, in order to reset page focus, fix the underlay, etc.
// If the specified dialog isn't open then does nothing.
//
// Caller is responsible for either setting display:none on the dialog domNode,
// or calling dijit.popup.hide(), or removing it from the page DOM.
var ds = dijit._dialogStack;
if(ds[ds.length-1].dialog == dialog){
// Removing the top (or only) dialog in the stack, return focus
// to previous dialog
ds.pop();
var pd = ds[ds.length-1]; // the new active dialog (or the base page itself)
// Adjust underlay
if(ds.length == 1){
// Returning to original page.
// Hide the underlay, unless the underlay widget has already been destroyed
// because we are being called during page unload (when all widgets are destroyed)
if(!dijit._underlay._destroyed){
dijit._underlay.hide();
}
}else{
// Popping back to previous dialog, adjust underlay
dojo.style(dijit._underlay.domNode, 'zIndex', pd.zIndex - 1);
dijit._underlay.set(pd.underlayAttrs);
}
// Adjust focus
if(dialog.refocus){
// If we are returning control to a previous dialog but for some reason
// that dialog didn't have a focused field, set focus to first focusable item.
// This situation could happen if two dialogs appeared at nearly the same time,
// since a dialog doesn't set it's focus until the fade-in is finished.
var focus = pd.focus;
if(!focus || (pd.dialog && !dojo.isDescendant(focus.node, pd.dialog.domNode))){
pd.dialog._getFocusItems(pd.dialog.domNode);
focus = pd.dialog._firstFocusItem;
}
try{
dijit.focus(focus);
}catch(e){
/* focus() will fail if user opened the dialog by clicking a non-focusable element */
}
}
}else{
// Removing a dialog out of order (#9944, #10705).
// Don't need to mess with underlay or z-index or anything.
var idx = dojo.indexOf(dojo.map(ds, function(elem){return elem.dialog}), dialog);
if(idx != -1){
ds.splice(idx, 1);
}
}
},
isTop: function(/*dijit._Widget*/ dialog){
// summary:
// Returns true if specified Dialog is the top in the task
var ds = dijit._dialogStack;
return ds[ds.length-1].dialog == dialog;
}
};
// Stack representing the various active "levels" on the page, starting with the
// stuff initially visible on the page (at z-index 0), and then having an entry for
// each Dialog shown.
// Each element in stack has form {
// dialog: dialogWidget,
// focus: returnFromGetFocus(),
// underlayAttrs: attributes to set on underlay (when this widget is active)
// }
dijit._dialogStack = [
{dialog: null, focus: null, underlayAttrs: null} // entry for stuff at z-index: 0
];
}