| 1 | define([ |
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| 2 | "dojo/_base/array", // array.indexOf |
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| 3 | "dojo/_base/declare", // declare |
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| 4 | "dojo/dom", // dom.isDescendant domClass.replace |
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| 5 | "dojo/dom-attr", |
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| 6 | "dojo/dom-class", // domClass.replace |
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| 7 | "dojo/_base/lang", // lang.hitch |
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| 8 | "dojo/mouse", // mouse.enter, mouse.leave |
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| 9 | "dojo/on", |
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| 10 | "dojo/window", |
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| 11 | "./a11yclick", |
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| 12 | "./registry", |
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| 13 | "./_Widget", |
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| 14 | "./_CssStateMixin", |
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| 15 | "./_KeyNavContainer", |
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| 16 | "./_TemplatedMixin" |
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| 17 | ], function(array, declare, dom, domAttr, domClass, lang, mouse, on, winUtils, a11yclick, |
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| 18 | registry, _Widget, _CssStateMixin, _KeyNavContainer, _TemplatedMixin){ |
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| 19 | |
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| 20 | // module: |
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| 21 | // dijit/_MenuBase |
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| 22 | |
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| 23 | return declare("dijit._MenuBase", [_Widget, _TemplatedMixin, _KeyNavContainer, _CssStateMixin], { |
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| 24 | // summary: |
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| 25 | // Abstract base class for Menu and MenuBar. |
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| 26 | // Subclass should implement _onUpArrow(), _onDownArrow(), _onLeftArrow(), and _onRightArrow(). |
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| 27 | |
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| 28 | // selected: dijit/MenuItem |
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| 29 | // Currently selected (a.k.a. highlighted) MenuItem, or null if no MenuItem is selected. |
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| 30 | // If a submenu is open, will be set to MenuItem that displayed the submenu. OTOH, if |
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| 31 | // this Menu is in passive mode (i.e. hasn't been clicked yet), will be null, because |
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| 32 | // "selected" is not merely "hovered". |
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| 33 | selected: null, |
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| 34 | _setSelectedAttr: function(item){ |
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| 35 | if(this.selected != item){ |
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| 36 | if(this.selected){ |
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| 37 | this.selected._setSelected(false); |
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| 38 | this._onChildDeselect(this.selected); |
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| 39 | } |
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| 40 | if(item){ |
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| 41 | item._setSelected(true); |
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| 42 | } |
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| 43 | this._set("selected", item); |
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| 44 | } |
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| 45 | }, |
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| 46 | |
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| 47 | // activated: [readonly] Boolean |
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| 48 | // This Menu has been clicked (mouse or via space/arrow key) or opened as a submenu, |
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| 49 | // so mere mouseover will open submenus. Focusing a menu via TAB does NOT automatically make it active |
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| 50 | // since TAB is a navigation operation and not a selection one. |
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| 51 | // For Windows apps, pressing the ALT key focuses the menubar menus (similar to TAB navigation) but the |
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| 52 | // menu is not active (ie no dropdown) until an item is clicked. |
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| 53 | activated: false, |
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| 54 | _setActivatedAttr: function(val){ |
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| 55 | domClass.toggle(this.domNode, "dijitMenuActive", val); |
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| 56 | domClass.toggle(this.domNode, "dijitMenuPassive", !val); |
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| 57 | this._set("activated", val); |
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| 58 | }, |
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| 59 | |
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| 60 | // parentMenu: [readonly] Widget |
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| 61 | // pointer to menu that displayed me |
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| 62 | parentMenu: null, |
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| 63 | |
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| 64 | // popupDelay: Integer |
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| 65 | // After a menu has been activated (by clicking on it etc.), number of milliseconds before hovering |
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| 66 | // (without clicking) another MenuItem causes that MenuItem's popup to automatically open. |
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| 67 | popupDelay: 500, |
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| 68 | |
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| 69 | // passivePopupDelay: Integer |
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| 70 | // For a passive (unclicked) Menu, number of milliseconds before hovering (without clicking) will cause |
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| 71 | // the popup to open. Default is Infinity, meaning you need to click the menu to open it. |
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| 72 | passivePopupDelay: Infinity, |
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| 73 | |
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| 74 | // autoFocus: Boolean |
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| 75 | // A toggle to control whether or not a Menu gets focused when opened as a drop down from a MenuBar |
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| 76 | // or DropDownButton/ComboButton. Note though that it always get focused when opened via the keyboard. |
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| 77 | autoFocus: false, |
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| 78 | |
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| 79 | childSelector: function(/*DOMNode*/ node){ |
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| 80 | // summary: |
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| 81 | // Selector (passed to on.selector()) used to identify MenuItem child widgets, but exclude inert children |
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| 82 | // like MenuSeparator. If subclass overrides to a string (ex: "> *"), the subclass must require dojo/query. |
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| 83 | // tags: |
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| 84 | // protected |
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| 85 | |
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| 86 | var widget = registry.byNode(node); |
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| 87 | return node.parentNode == this.containerNode && widget && widget.focus; |
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| 88 | }, |
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| 89 | |
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| 90 | postCreate: function(){ |
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| 91 | var self = this, |
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| 92 | matches = typeof this.childSelector == "string" ? this.childSelector : lang.hitch(this, "childSelector"); |
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| 93 | this.own( |
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| 94 | on(this.containerNode, on.selector(matches, mouse.enter), function(){ |
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| 95 | self.onItemHover(registry.byNode(this)); |
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| 96 | }), |
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| 97 | on(this.containerNode, on.selector(matches, mouse.leave), function(){ |
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| 98 | self.onItemUnhover(registry.byNode(this)); |
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| 99 | }), |
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| 100 | on(this.containerNode, on.selector(matches, a11yclick), function(evt){ |
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| 101 | self.onItemClick(registry.byNode(this), evt); |
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| 102 | evt.stopPropagation(); |
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| 103 | evt.preventDefault(); |
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| 104 | }) |
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| 105 | ); |
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| 106 | this.inherited(arguments); |
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| 107 | }, |
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| 108 | |
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| 109 | onKeyboardSearch: function(/*MenuItem*/ item, /*Event*/ evt, /*String*/ searchString, /*Number*/ numMatches){ |
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| 110 | // summary: |
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| 111 | // Attach point for notification about when a menu item has been searched for |
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| 112 | // via the keyboard search mechanism. |
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| 113 | // tags: |
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| 114 | // protected |
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| 115 | this.inherited(arguments); |
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| 116 | if(!!item && (numMatches == -1 || (!!item.popup && numMatches == 1))){ |
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| 117 | this.onItemClick(item, evt); |
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| 118 | } |
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| 119 | }, |
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| 120 | |
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| 121 | _keyboardSearchCompare: function(/*dijit/_WidgetBase*/ item, /*String*/ searchString){ |
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| 122 | // summary: |
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| 123 | // Compares the searchString to the widget's text label, returning: |
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| 124 | // -1: a high priority match and stop searching |
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| 125 | // 0: no match |
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| 126 | // 1: a match but keep looking for a higher priority match |
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| 127 | // tags: |
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| 128 | // private |
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| 129 | if(!!item.shortcutKey){ |
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| 130 | // accessKey matches have priority |
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| 131 | return searchString == item.shortcutKey.toLowerCase() ? -1 : 0; |
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| 132 | } |
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| 133 | return this.inherited(arguments) ? 1 : 0; // change return value of -1 to 1 so that searching continues |
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| 134 | }, |
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| 135 | |
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| 136 | onExecute: function(){ |
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| 137 | // summary: |
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| 138 | // Attach point for notification about when a menu item has been executed. |
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| 139 | // This is an internal mechanism used for Menus to signal to their parent to |
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| 140 | // close them, because they are about to execute the onClick handler. In |
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| 141 | // general developers should not attach to or override this method. |
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| 142 | // tags: |
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| 143 | // protected |
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| 144 | }, |
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| 145 | |
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| 146 | onCancel: function(/*Boolean*/ /*===== closeAll =====*/){ |
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| 147 | // summary: |
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| 148 | // Attach point for notification about when the user cancels the current menu |
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| 149 | // This is an internal mechanism used for Menus to signal to their parent to |
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| 150 | // close them. In general developers should not attach to or override this method. |
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| 151 | // tags: |
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| 152 | // protected |
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| 153 | }, |
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| 154 | |
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| 155 | _moveToPopup: function(/*Event*/ evt){ |
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| 156 | // summary: |
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| 157 | // This handles the right arrow key (left arrow key on RTL systems), |
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| 158 | // which will either open a submenu, or move to the next item in the |
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| 159 | // ancestor MenuBar |
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| 160 | // tags: |
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| 161 | // private |
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| 162 | |
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| 163 | if(this.focusedChild && this.focusedChild.popup && !this.focusedChild.disabled){ |
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| 164 | this.onItemClick(this.focusedChild, evt); |
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| 165 | }else{ |
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| 166 | var topMenu = this._getTopMenu(); |
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| 167 | if(topMenu && topMenu._isMenuBar){ |
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| 168 | topMenu.focusNext(); |
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| 169 | } |
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| 170 | } |
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| 171 | }, |
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| 172 | |
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| 173 | _onPopupHover: function(/*Event*/ /*===== evt =====*/){ |
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| 174 | // summary: |
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| 175 | // This handler is called when the mouse moves over the popup. |
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| 176 | // tags: |
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| 177 | // private |
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| 178 | |
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| 179 | // if the mouse hovers over a menu popup that is in pending-close state, |
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| 180 | // then stop the close operation. |
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| 181 | // This can't be done in onItemHover since some popup targets don't have MenuItems (e.g. ColorPicker) |
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| 182 | |
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| 183 | // highlight the parent menu item pointing to this popup (in case user temporarily moused over another MenuItem) |
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| 184 | this.set("selected", this.currentPopupItem); |
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| 185 | |
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| 186 | // cancel the pending close (if there is one) (in case user temporarily moused over another MenuItem) |
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| 187 | this._stopPendingCloseTimer(); |
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| 188 | }, |
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| 189 | |
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| 190 | onItemHover: function(/*MenuItem*/ item){ |
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| 191 | // summary: |
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| 192 | // Called when cursor is over a MenuItem. |
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| 193 | // tags: |
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| 194 | // protected |
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| 195 | |
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| 196 | // Don't do anything unless user has "activated" the menu by: |
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| 197 | // 1) clicking it |
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| 198 | // 2) opening it from a parent menu (which automatically activates it) |
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| 199 | |
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| 200 | if(this.activated){ |
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| 201 | this.set("selected", item); |
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| 202 | if(item.popup && !item.disabled && !this.hover_timer){ |
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| 203 | this.hover_timer = this.defer(function(){ |
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| 204 | this._openItemPopup(item); |
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| 205 | }, this.popupDelay); |
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| 206 | } |
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| 207 | }else if(this.passivePopupDelay < Infinity){ |
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| 208 | if(this.passive_hover_timer){ |
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| 209 | this.passive_hover_timer.remove(); |
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| 210 | } |
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| 211 | this.passive_hover_timer = this.defer(function(){ |
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| 212 | this.onItemClick(item, {type: "click"}); |
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| 213 | }, this.passivePopupDelay); |
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| 214 | } |
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| 215 | |
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| 216 | this._hoveredChild = item; |
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| 217 | |
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| 218 | item._set("hovering", true); |
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| 219 | }, |
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| 220 | |
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| 221 | _onChildDeselect: function(item){ |
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| 222 | // summary: |
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| 223 | // Called when a child MenuItem becomes deselected. Setup timer to close its popup. |
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| 224 | |
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| 225 | this._stopPopupTimer(); |
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| 226 | |
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| 227 | // Setup timer to close all popups that are open and descendants of this menu. |
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| 228 | // Will be canceled if user quickly moves the mouse over the popup. |
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| 229 | if(this.currentPopupItem == item){ |
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| 230 | this._stopPendingCloseTimer(); |
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| 231 | this._pendingClose_timer = this.defer(function(){ |
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| 232 | this._pendingClose_timer = null; |
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| 233 | this.currentPopupItem = null; |
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| 234 | item._closePopup(); // this calls onClose |
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| 235 | }, this.popupDelay); |
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| 236 | } |
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| 237 | }, |
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| 238 | |
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| 239 | onItemUnhover: function(/*MenuItem*/ item){ |
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| 240 | // summary: |
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| 241 | // Callback fires when mouse exits a MenuItem |
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| 242 | // tags: |
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| 243 | // protected |
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| 244 | |
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| 245 | if(this._hoveredChild == item){ |
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| 246 | this._hoveredChild = null; |
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| 247 | } |
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| 248 | |
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| 249 | if(this.passive_hover_timer){ |
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| 250 | this.passive_hover_timer.remove(); |
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| 251 | this.passive_hover_timer = null; |
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| 252 | } |
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| 253 | |
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| 254 | item._set("hovering", false); |
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| 255 | }, |
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| 256 | |
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| 257 | _stopPopupTimer: function(){ |
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| 258 | // summary: |
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| 259 | // Cancels the popup timer because the user has stop hovering |
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| 260 | // on the MenuItem, etc. |
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| 261 | // tags: |
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| 262 | // private |
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| 263 | |
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| 264 | if(this.hover_timer){ |
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| 265 | this.hover_timer = this.hover_timer.remove(); |
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| 266 | } |
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| 267 | }, |
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| 268 | |
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| 269 | _stopPendingCloseTimer: function(){ |
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| 270 | // summary: |
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| 271 | // Cancels the pending-close timer because the close has been preempted |
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| 272 | // tags: |
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| 273 | // private |
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| 274 | if(this._pendingClose_timer){ |
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| 275 | this._pendingClose_timer = this._pendingClose_timer.remove(); |
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| 276 | } |
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| 277 | }, |
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| 278 | |
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| 279 | _getTopMenu: function(){ |
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| 280 | // summary: |
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| 281 | // Returns the top menu in this chain of Menus |
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| 282 | // tags: |
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| 283 | // private |
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| 284 | for(var top = this; top.parentMenu; top = top.parentMenu){} |
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| 285 | return top; |
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| 286 | }, |
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| 287 | |
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| 288 | onItemClick: function(/*dijit/_WidgetBase*/ item, /*Event*/ evt){ |
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| 289 | // summary: |
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| 290 | // Handle clicks on an item. |
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| 291 | // tags: |
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| 292 | // private |
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| 293 | |
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| 294 | if(this.passive_hover_timer){ |
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| 295 | this.passive_hover_timer.remove(); |
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| 296 | } |
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| 297 | |
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| 298 | this.focusChild(item); |
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| 299 | |
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| 300 | if(item.disabled){ |
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| 301 | return false; |
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| 302 | } |
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| 303 | |
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| 304 | if(item.popup){ |
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| 305 | this.set("selected", item); |
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| 306 | this.set("activated", true); |
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| 307 | var byKeyboard = /^key/.test(evt._origType || evt.type) || |
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| 308 | (evt.clientX == 0 && evt.clientY == 0); // detects accessKey like ALT+SHIFT+F, where type is "click" |
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| 309 | this._openItemPopup(item, byKeyboard); |
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| 310 | }else{ |
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| 311 | // before calling user defined handler, close hierarchy of menus |
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| 312 | // and restore focus to place it was when menu was opened |
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| 313 | this.onExecute(); |
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| 314 | |
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| 315 | // user defined handler for click |
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| 316 | item._onClick ? item._onClick(evt) : item.onClick(evt); |
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| 317 | } |
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| 318 | }, |
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| 319 | |
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| 320 | _openItemPopup: function(/*dijit/MenuItem*/ from_item, /*Boolean*/ focus){ |
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| 321 | // summary: |
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| 322 | // Open the popup to the side of/underneath the current menu item, and optionally focus first item |
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| 323 | // tags: |
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| 324 | // protected |
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| 325 | |
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| 326 | if(from_item == this.currentPopupItem){ |
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| 327 | // Specified popup is already being shown, so just return |
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| 328 | return; |
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| 329 | } |
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| 330 | if(this.currentPopupItem){ |
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| 331 | // If another popup is currently shown, then close it |
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| 332 | this._stopPendingCloseTimer(); |
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| 333 | this.currentPopupItem._closePopup(); |
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| 334 | } |
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| 335 | this._stopPopupTimer(); |
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| 336 | |
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| 337 | var popup = from_item.popup; |
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| 338 | popup.parentMenu = this; |
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| 339 | |
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| 340 | // detect mouseover of the popup to handle lazy mouse movements that temporarily focus other menu items\c |
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| 341 | this.own(this._mouseoverHandle = on.once(popup.domNode, "mouseover", lang.hitch(this, "_onPopupHover"))); |
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| 342 | |
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| 343 | var self = this; |
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| 344 | from_item._openPopup({ |
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| 345 | parent: this, |
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| 346 | orient: this._orient || ["after", "before"], |
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| 347 | onCancel: function(){ // called when the child menu is canceled |
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| 348 | if(focus){ |
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| 349 | // put focus back on my node before focused node is hidden |
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| 350 | self.focusChild(from_item); |
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| 351 | } |
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| 352 | |
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| 353 | // close the submenu (be sure this is done _after_ focus is moved) |
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| 354 | self._cleanUp(); |
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| 355 | }, |
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| 356 | onExecute: lang.hitch(this, "_cleanUp", true), |
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| 357 | onClose: function(){ |
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| 358 | // Remove handler created by onItemHover |
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| 359 | if(self._mouseoverHandle){ |
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| 360 | self._mouseoverHandle.remove(); |
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| 361 | delete self._mouseoverHandle; |
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| 362 | } |
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| 363 | } |
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| 364 | }, focus); |
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| 365 | |
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| 366 | this.currentPopupItem = from_item; |
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| 367 | |
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| 368 | // TODO: focusing a popup should clear tabIndex on Menu (and it's child MenuItems), so that neither |
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| 369 | // TAB nor SHIFT-TAB returns to the menu. Only ESC or ENTER should return to the menu. |
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| 370 | }, |
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| 371 | |
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| 372 | onOpen: function(/*Event*/ /*===== e =====*/){ |
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| 373 | // summary: |
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| 374 | // Callback when this menu is opened. |
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| 375 | // This is called by the popup manager as notification that the menu |
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| 376 | // was opened. |
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| 377 | // tags: |
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| 378 | // private |
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| 379 | |
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| 380 | this.isShowingNow = true; |
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| 381 | this.set("activated", true); |
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| 382 | }, |
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| 383 | |
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| 384 | onClose: function(){ |
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| 385 | // summary: |
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| 386 | // Callback when this menu is closed. |
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| 387 | // This is called by the popup manager as notification that the menu |
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| 388 | // was closed. |
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| 389 | // tags: |
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| 390 | // private |
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| 391 | |
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| 392 | this.set("activated", false); |
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| 393 | this.set("selected", null); |
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| 394 | this.isShowingNow = false; |
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| 395 | this.parentMenu = null; |
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| 396 | }, |
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| 397 | |
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| 398 | _closeChild: function(){ |
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| 399 | // summary: |
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| 400 | // Called when submenu is clicked or focus is lost. Close hierarchy of menus. |
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| 401 | // tags: |
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| 402 | // private |
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| 403 | this._stopPopupTimer(); |
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| 404 | |
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| 405 | if(this.currentPopupItem){ |
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| 406 | // If focus is on a descendant MenuItem then move focus to me, |
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| 407 | // because IE doesn't like it when you display:none a node with focus, |
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| 408 | // and also so keyboard users don't lose control. |
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| 409 | // Likely, immediately after a user defined onClick handler will move focus somewhere |
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| 410 | // else, like a Dialog. |
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| 411 | if(this.focused){ |
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| 412 | domAttr.set(this.selected.focusNode, "tabIndex", this.tabIndex); |
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| 413 | this.selected.focusNode.focus(); |
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| 414 | } |
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| 415 | |
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| 416 | // Close all popups that are open and descendants of this menu |
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| 417 | this.currentPopupItem._closePopup(); |
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| 418 | this.currentPopupItem = null; |
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| 419 | } |
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| 420 | }, |
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| 421 | |
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| 422 | _onItemFocus: function(/*MenuItem*/ item){ |
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| 423 | // summary: |
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| 424 | // Called when child of this Menu gets focus from: |
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| 425 | // |
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| 426 | // 1. clicking it |
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| 427 | // 2. tabbing into it |
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| 428 | // 3. being opened by a parent menu. |
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| 429 | // |
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| 430 | // This is not called just from mouse hover. |
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| 431 | |
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| 432 | if(this._hoveredChild && this._hoveredChild != item){ |
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| 433 | this.onItemUnhover(this._hoveredChild); // any previous mouse movement is trumped by focus selection |
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| 434 | } |
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| 435 | this.set("selected", item); |
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| 436 | }, |
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| 437 | |
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| 438 | _onBlur: function(){ |
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| 439 | // summary: |
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| 440 | // Called when focus is moved away from this Menu and it's submenus. |
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| 441 | // tags: |
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| 442 | // protected |
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| 443 | |
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| 444 | this._cleanUp(true); |
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| 445 | this.inherited(arguments); |
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| 446 | }, |
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| 447 | |
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| 448 | _cleanUp: function(/*Boolean*/ clearSelectedItem){ |
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| 449 | // summary: |
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| 450 | // Called when the user is done with this menu. Closes hierarchy of menus. |
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| 451 | // tags: |
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| 452 | // private |
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| 453 | |
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| 454 | this._closeChild(); // don't call this.onClose since that's incorrect for MenuBar's that never close |
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| 455 | if(typeof this.isShowingNow == 'undefined'){ // non-popup menu doesn't call onClose |
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| 456 | this.set("activated", false); |
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| 457 | } |
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| 458 | |
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| 459 | if(clearSelectedItem){ |
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| 460 | this.set("selected", null); |
|---|
| 461 | } |
|---|
| 462 | } |
|---|
| 463 | }); |
|---|
| 464 | }); |
|---|
