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tt-rss/lib/dijit/_MenuBase.js.uncompressed.js

430 lines
13 KiB
JavaScript

define("dijit/_MenuBase", [
"dojo/_base/array", // array.indexOf
"dojo/_base/declare", // declare
"dojo/dom", // dom.isDescendant domClass.replace
"dojo/dom-attr",
"dojo/dom-class", // domClass.replace
"dojo/_base/lang", // lang.hitch
"dojo/mouse", // mouse.enter, mouse.leave
"dojo/on",
"dojo/window",
"./a11yclick",
"./popup",
"./registry",
"./_Widget",
"./_KeyNavContainer",
"./_TemplatedMixin"
], function(array, declare, dom, domAttr, domClass, lang, mouse, on, winUtils,
a11yclick, pm, registry, _Widget, _KeyNavContainer, _TemplatedMixin){
// module:
// dijit/_MenuBase
return declare("dijit._MenuBase",
[_Widget, _TemplatedMixin, _KeyNavContainer],
{
// summary:
// Base class for Menu and MenuBar
// parentMenu: [readonly] Widget
// pointer to menu that displayed me
parentMenu: null,
// popupDelay: Integer
// number of milliseconds before hovering (without clicking) causes the popup to automatically open.
popupDelay: 500,
// autoFocus: Boolean
// A toggle to control whether or not a Menu gets focused when opened as a drop down from a MenuBar
// or DropDownButton/ComboButton. Note though that it always get focused when opened via the keyboard.
autoFocus: false,
childSelector: function(/*DOMNode*/ node){
// summary:
// Selector (passed to on.selector()) used to identify MenuItem child widgets, but exclude inert children
// like MenuSeparator. If subclass overrides to a string (ex: "> *"), the subclass must require dojo/query.
// tags:
// protected
var widget = registry.byNode(node);
return node.parentNode == this.containerNode && widget && widget.focus;
},
postCreate: function(){
var self = this,
matches = typeof this.childSelector == "string" ? this.childSelector : lang.hitch(this, "childSelector");
this.own(
on(this.containerNode, on.selector(matches, mouse.enter), function(){
self.onItemHover(registry.byNode(this));
}),
on(this.containerNode, on.selector(matches, mouse.leave), function(){
self.onItemUnhover(registry.byNode(this));
}),
on(this.containerNode, on.selector(matches, a11yclick), function(evt){
self.onItemClick(registry.byNode(this), evt);
evt.stopPropagation();
evt.preventDefault();
})
);
this.inherited(arguments);
},
onExecute: function(){
// summary:
// Attach point for notification about when a menu item has been executed.
// This is an internal mechanism used for Menus to signal to their parent to
// close them, because they are about to execute the onClick handler. In
// general developers should not attach to or override this method.
// tags:
// protected
},
onCancel: function(/*Boolean*/ /*===== closeAll =====*/){
// summary:
// Attach point for notification about when the user cancels the current menu
// This is an internal mechanism used for Menus to signal to their parent to
// close them. In general developers should not attach to or override this method.
// tags:
// protected
},
_moveToPopup: function(/*Event*/ evt){
// summary:
// This handles the right arrow key (left arrow key on RTL systems),
// which will either open a submenu, or move to the next item in the
// ancestor MenuBar
// tags:
// private
if(this.focusedChild && this.focusedChild.popup && !this.focusedChild.disabled){
this.onItemClick(this.focusedChild, evt);
}else{
var topMenu = this._getTopMenu();
if(topMenu && topMenu._isMenuBar){
topMenu.focusNext();
}
}
},
_onPopupHover: function(/*Event*/ /*===== evt =====*/){
// summary:
// This handler is called when the mouse moves over the popup.
// tags:
// private
// if the mouse hovers over a menu popup that is in pending-close state,
// then stop the close operation.
// This can't be done in onItemHover since some popup targets don't have MenuItems (e.g. ColorPicker)
if(this.currentPopup && this.currentPopup._pendingClose_timer){
var parentMenu = this.currentPopup.parentMenu;
// highlight the parent menu item pointing to this popup
if(parentMenu.focusedChild){
parentMenu.focusedChild._setSelected(false);
}
parentMenu.focusedChild = this.currentPopup.from_item;
parentMenu.focusedChild._setSelected(true);
// cancel the pending close
this._stopPendingCloseTimer(this.currentPopup);
}
},
onItemHover: function(/*MenuItem*/ item){
// summary:
// Called when cursor is over a MenuItem.
// tags:
// protected
// Don't do anything unless user has "activated" the menu by:
// 1) clicking it
// 2) opening it from a parent menu (which automatically focuses it)
if(this.isActive){
this.focusChild(item);
if(this.focusedChild.popup && !this.focusedChild.disabled && !this.hover_timer){
this.hover_timer = this.defer("_openPopup", this.popupDelay);
}
}
// if the user is mixing mouse and keyboard navigation,
// then the menu may not be active but a menu item has focus,
// but it's not the item that the mouse just hovered over.
// To avoid both keyboard and mouse selections, use the latest.
if(this.focusedChild){
this.focusChild(item);
}
this._hoveredChild = item;
item._set("hovering", true);
},
_onChildBlur: function(item){
// summary:
// Called when a child MenuItem becomes inactive because focus
// has been removed from the MenuItem *and* it's descendant menus.
// tags:
// private
this._stopPopupTimer();
item._setSelected(false);
// Close all popups that are open and descendants of this menu
var itemPopup = item.popup;
if(itemPopup){
this._stopPendingCloseTimer(itemPopup);
itemPopup._pendingClose_timer = this.defer(function(){
itemPopup._pendingClose_timer = null;
if(itemPopup.parentMenu){
itemPopup.parentMenu.currentPopup = null;
}
pm.close(itemPopup); // this calls onClose
}, this.popupDelay);
}
},
onItemUnhover: function(/*MenuItem*/ item){
// summary:
// Callback fires when mouse exits a MenuItem
// tags:
// protected
if(this.isActive){
this._stopPopupTimer();
}
if(this._hoveredChild == item){ this._hoveredChild = null; }
item._set("hovering", false);
},
_stopPopupTimer: function(){
// summary:
// Cancels the popup timer because the user has stop hovering
// on the MenuItem, etc.
// tags:
// private
if(this.hover_timer){
this.hover_timer = this.hover_timer.remove();
}
},
_stopPendingCloseTimer: function(/*dijit/_WidgetBase*/ popup){
// summary:
// Cancels the pending-close timer because the close has been preempted
// tags:
// private
if(popup._pendingClose_timer){
popup._pendingClose_timer = popup._pendingClose_timer.remove();
}
},
_stopFocusTimer: function(){
// summary:
// Cancels the pending-focus timer because the menu was closed before focus occured
// tags:
// private
if(this._focus_timer){
this._focus_timer = this._focus_timer.remove();
}
},
_getTopMenu: function(){
// summary:
// Returns the top menu in this chain of Menus
// tags:
// private
for(var top=this; top.parentMenu; top=top.parentMenu);
return top;
},
onItemClick: function(/*dijit/_WidgetBase*/ item, /*Event*/ evt){
// summary:
// Handle clicks on an item.
// tags:
// private
// this can't be done in _onFocus since the _onFocus events occurs asynchronously
if(typeof this.isShowingNow == 'undefined'){ // non-popup menu
this._markActive();
}
this.focusChild(item);
if(item.disabled){ return false; }
if(item.popup){
this._openPopup(evt.type == "keypress");
}else{
// before calling user defined handler, close hierarchy of menus
// and restore focus to place it was when menu was opened
this.onExecute();
// user defined handler for click
item._onClick ? item._onClick(evt) : item.onClick(evt);
}
},
_openPopup: function(/*Boolean*/ focus){
// summary:
// Open the popup to the side of/underneath the current menu item, and optionally focus first item
// tags:
// protected
this._stopPopupTimer();
var from_item = this.focusedChild;
if(!from_item){ return; } // the focused child lost focus since the timer was started
var popup = from_item.popup;
if(!popup.isShowingNow){
if(this.currentPopup){
this._stopPendingCloseTimer(this.currentPopup);
pm.close(this.currentPopup);
}
popup.parentMenu = this;
popup.from_item = from_item; // helps finding the parent item that should be focused for this popup
var self = this;
pm.open({
parent: this,
popup: popup,
around: from_item.domNode,
orient: this._orient || ["after", "before"],
onCancel: function(){ // called when the child menu is canceled
// set isActive=false (_closeChild vs _cleanUp) so that subsequent hovering will NOT open child menus
// which seems aligned with the UX of most applications (e.g. notepad, wordpad, paint shop pro)
self.focusChild(from_item); // put focus back on my node
self._cleanUp(); // close the submenu (be sure this is done _after_ focus is moved)
from_item._setSelected(true); // oops, _cleanUp() deselected the item
self.focusedChild = from_item; // and unset focusedChild
},
onExecute: lang.hitch(this, "_cleanUp")
});
this.currentPopup = popup;
// detect mouseovers to handle lazy mouse movements that temporarily focus other menu items
popup.connect(popup.domNode, "onmouseenter", lang.hitch(self, "_onPopupHover")); // cleaned up when the popped-up widget is destroyed on close
}
if(focus && popup.focus){
// If user is opening the popup via keyboard (right arrow, or down arrow for MenuBar), then focus the popup.
// If the cursor happens to collide with the popup, it will generate an onmouseover event
// even though the mouse wasn't moved. Use defer() to call popup.focus so that
// our focus() call overrides the onmouseover event, rather than vice-versa. (#8742)
popup._focus_timer = this.defer(lang.hitch(popup, function(){
this._focus_timer = null;
this.focus();
}));
}
},
_markActive: function(){
// summary:
// Mark this menu's state as active.
// Called when this Menu gets focus from:
//
// 1. clicking it (mouse or via space/arrow key)
// 2. being opened by a parent menu.
//
// This is not called just from mouse hover.
// Focusing a menu via TAB does NOT automatically set isActive
// since TAB is a navigation operation and not a selection one.
// For Windows apps, pressing the ALT key focuses the menubar
// menus (similar to TAB navigation) but the menu is not active
// (ie no dropdown) until an item is clicked.
this.isActive = true;
domClass.replace(this.domNode, "dijitMenuActive", "dijitMenuPassive");
},
onOpen: function(/*Event*/ /*===== e =====*/){
// summary:
// Callback when this menu is opened.
// This is called by the popup manager as notification that the menu
// was opened.
// tags:
// private
this.isShowingNow = true;
this._markActive();
},
_markInactive: function(){
// summary:
// Mark this menu's state as inactive.
this.isActive = false; // don't do this in _onBlur since the state is pending-close until we get here
domClass.replace(this.domNode, "dijitMenuPassive", "dijitMenuActive");
},
onClose: function(){
// summary:
// Callback when this menu is closed.
// This is called by the popup manager as notification that the menu
// was closed.
// tags:
// private
this._stopFocusTimer();
this._markInactive();
this.isShowingNow = false;
this.parentMenu = null;
},
_closeChild: function(){
// summary:
// Called when submenu is clicked or focus is lost. Close hierarchy of menus.
// tags:
// private
this._stopPopupTimer();
if(this.currentPopup){
// If focus is on a descendant MenuItem then move focus to me,
// because IE doesn't like it when you display:none a node with focus,
// and also so keyboard users don't lose control.
// Likely, immediately after a user defined onClick handler will move focus somewhere
// else, like a Dialog.
if(array.indexOf(this._focusManager.activeStack, this.id) >= 0){
domAttr.set(this.focusedChild.focusNode, "tabIndex", this.tabIndex);
this.focusedChild.focusNode.focus();
}
// Close all popups that are open and descendants of this menu
pm.close(this.currentPopup);
this.currentPopup = null;
}
if(this.focusedChild){ // unhighlight the focused item
this.focusedChild._setSelected(false);
this.onItemUnhover(this.focusedChild);
this.focusedChild = null;
}
},
_onItemFocus: function(/*MenuItem*/ item){
// summary:
// Called when child of this Menu gets focus from:
//
// 1. clicking it
// 2. tabbing into it
// 3. being opened by a parent menu.
//
// This is not called just from mouse hover.
if(this._hoveredChild && this._hoveredChild != item){
this.onItemUnhover(this._hoveredChild); // any previous mouse movement is trumped by focus selection
}
},
_onBlur: function(){
// summary:
// Called when focus is moved away from this Menu and it's submenus.
// tags:
// protected
this._cleanUp();
this.inherited(arguments);
},
_cleanUp: function(){
// summary:
// Called when the user is done with this menu. Closes hierarchy of menus.
// tags:
// private
this._closeChild(); // don't call this.onClose since that's incorrect for MenuBar's that never close
if(typeof this.isShowingNow == 'undefined'){ // non-popup menu doesn't call onClose
this._markInactive();
}
}
});
});