1 | /*! |
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2 | * Ext JS Library 3.4.0 |
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3 | * Copyright(c) 2006-2011 Sencha Inc. |
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4 | * licensing@sencha.com |
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5 | * http://www.sencha.com/license |
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6 | */ |
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7 | /** |
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8 | * @class Ext.layout.boxOverflow.Menu |
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9 | * @extends Ext.layout.boxOverflow.None |
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10 | * Description |
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11 | */ |
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12 | Ext.layout.boxOverflow.Menu = Ext.extend(Ext.layout.boxOverflow.None, { |
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13 | /** |
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14 | * @cfg afterCls |
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15 | * @type String |
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16 | * CSS class added to the afterCt element. This is the element that holds any special items such as scrollers, |
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17 | * which must always be present at the rightmost edge of the Container |
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18 | */ |
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19 | afterCls: 'x-strip-right', |
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20 | |
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21 | /** |
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22 | * @property noItemsMenuText |
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23 | * @type String |
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24 | * HTML fragment to render into the toolbar overflow menu if there are no items to display |
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25 | */ |
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26 | noItemsMenuText : '<div class="x-toolbar-no-items">(None)</div>', |
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27 | |
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28 | constructor: function(layout) { |
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29 | Ext.layout.boxOverflow.Menu.superclass.constructor.apply(this, arguments); |
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30 | |
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31 | /** |
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32 | * @property menuItems |
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33 | * @type Array |
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34 | * Array of all items that are currently hidden and should go into the dropdown menu |
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35 | */ |
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36 | this.menuItems = []; |
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37 | }, |
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38 | |
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39 | /** |
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40 | * @private |
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41 | * Creates the beforeCt, innerCt and afterCt elements if they have not already been created |
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42 | * @param {Ext.Container} container The Container attached to this Layout instance |
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43 | * @param {Ext.Element} target The target Element |
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44 | */ |
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45 | createInnerElements: function() { |
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46 | if (!this.afterCt) { |
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47 | this.afterCt = this.layout.innerCt.insertSibling({cls: this.afterCls}, 'before'); |
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48 | } |
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49 | }, |
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50 | |
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51 | /** |
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52 | * @private |
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53 | */ |
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54 | clearOverflow: function(calculations, targetSize) { |
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55 | var newWidth = targetSize.width + (this.afterCt ? this.afterCt.getWidth() : 0), |
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56 | items = this.menuItems; |
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57 | |
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58 | this.hideTrigger(); |
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59 | |
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60 | for (var index = 0, length = items.length; index < length; index++) { |
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61 | items.pop().component.show(); |
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62 | } |
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63 | |
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64 | return { |
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65 | targetSize: { |
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66 | height: targetSize.height, |
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67 | width : newWidth |
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68 | } |
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69 | }; |
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70 | }, |
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71 | |
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72 | /** |
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73 | * @private |
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74 | */ |
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75 | showTrigger: function() { |
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76 | this.createMenu(); |
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77 | this.menuTrigger.show(); |
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78 | }, |
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79 | |
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80 | /** |
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81 | * @private |
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82 | */ |
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83 | hideTrigger: function() { |
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84 | if (this.menuTrigger != undefined) { |
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85 | this.menuTrigger.hide(); |
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86 | } |
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87 | }, |
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88 | |
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89 | /** |
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90 | * @private |
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91 | * Called before the overflow menu is shown. This constructs the menu's items, caching them for as long as it can. |
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92 | */ |
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93 | beforeMenuShow: function(menu) { |
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94 | var items = this.menuItems, |
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95 | len = items.length, |
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96 | item, |
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97 | prev; |
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98 | |
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99 | var needsSep = function(group, item){ |
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100 | return group.isXType('buttongroup') && !(item instanceof Ext.Toolbar.Separator); |
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101 | }; |
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102 | |
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103 | this.clearMenu(); |
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104 | menu.removeAll(); |
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105 | |
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106 | for (var i = 0; i < len; i++) { |
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107 | item = items[i].component; |
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108 | |
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109 | if (prev && (needsSep(item, prev) || needsSep(prev, item))) { |
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110 | menu.add('-'); |
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111 | } |
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112 | |
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113 | this.addComponentToMenu(menu, item); |
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114 | prev = item; |
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115 | } |
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116 | |
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117 | // put something so the menu isn't empty if no compatible items found |
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118 | if (menu.items.length < 1) { |
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119 | menu.add(this.noItemsMenuText); |
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120 | } |
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121 | }, |
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122 | |
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123 | /** |
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124 | * @private |
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125 | * Returns a menu config for a given component. This config is used to create a menu item |
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126 | * to be added to the expander menu |
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127 | * @param {Ext.Component} component The component to create the config for |
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128 | * @param {Boolean} hideOnClick Passed through to the menu item |
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129 | */ |
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130 | createMenuConfig : function(component, hideOnClick){ |
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131 | var config = Ext.apply({}, component.initialConfig), |
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132 | group = component.toggleGroup; |
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133 | |
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134 | Ext.copyTo(config, component, [ |
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135 | 'iconCls', 'icon', 'itemId', 'disabled', 'handler', 'scope', 'menu' |
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136 | ]); |
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137 | |
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138 | Ext.apply(config, { |
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139 | text : component.overflowText || component.text, |
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140 | hideOnClick: hideOnClick |
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141 | }); |
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142 | |
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143 | if (group || component.enableToggle) { |
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144 | Ext.apply(config, { |
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145 | group : group, |
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146 | checked: component.pressed, |
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147 | listeners: { |
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148 | checkchange: function(item, checked){ |
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149 | component.toggle(checked); |
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150 | } |
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151 | } |
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152 | }); |
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153 | } |
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154 | |
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155 | delete config.ownerCt; |
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156 | delete config.xtype; |
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157 | delete config.id; |
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158 | |
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159 | return config; |
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160 | }, |
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161 | |
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162 | /** |
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163 | * @private |
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164 | * Adds the given Toolbar item to the given menu. Buttons inside a buttongroup are added individually. |
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165 | * @param {Ext.menu.Menu} menu The menu to add to |
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166 | * @param {Ext.Component} component The component to add |
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167 | */ |
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168 | addComponentToMenu : function(menu, component) { |
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169 | if (component instanceof Ext.Toolbar.Separator) { |
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170 | menu.add('-'); |
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171 | |
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172 | } else if (Ext.isFunction(component.isXType)) { |
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173 | if (component.isXType('splitbutton')) { |
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174 | menu.add(this.createMenuConfig(component, true)); |
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175 | |
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176 | } else if (component.isXType('button')) { |
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177 | menu.add(this.createMenuConfig(component, !component.menu)); |
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178 | |
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179 | } else if (component.isXType('buttongroup')) { |
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180 | component.items.each(function(item){ |
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181 | this.addComponentToMenu(menu, item); |
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182 | }, this); |
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183 | } |
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184 | } |
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185 | }, |
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186 | |
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187 | /** |
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188 | * @private |
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189 | * Deletes the sub-menu of each item in the expander menu. Submenus are created for items such as |
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190 | * splitbuttons and buttongroups, where the Toolbar item cannot be represented by a single menu item |
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191 | */ |
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192 | clearMenu : function(){ |
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193 | var menu = this.moreMenu; |
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194 | if (menu && menu.items) { |
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195 | menu.items.each(function(item){ |
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196 | delete item.menu; |
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197 | }); |
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198 | } |
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199 | }, |
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200 | |
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201 | /** |
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202 | * @private |
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203 | * Creates the overflow trigger and menu used when enableOverflow is set to true and the items |
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204 | * in the layout are too wide to fit in the space available |
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205 | */ |
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206 | createMenu: function() { |
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207 | if (!this.menuTrigger) { |
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208 | this.createInnerElements(); |
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209 | |
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210 | /** |
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211 | * @private |
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212 | * @property menu |
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213 | * @type Ext.menu.Menu |
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214 | * The expand menu - holds items for every item that cannot be shown |
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215 | * because the container is currently not large enough. |
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216 | */ |
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217 | this.menu = new Ext.menu.Menu({ |
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218 | ownerCt : this.layout.container, |
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219 | listeners: { |
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220 | scope: this, |
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221 | beforeshow: this.beforeMenuShow |
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222 | } |
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223 | }); |
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224 | |
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225 | /** |
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226 | * @private |
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227 | * @property menuTrigger |
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228 | * @type Ext.Button |
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229 | * The expand button which triggers the overflow menu to be shown |
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230 | */ |
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231 | this.menuTrigger = new Ext.Button({ |
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232 | iconCls : 'x-toolbar-more-icon', |
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233 | cls : 'x-toolbar-more', |
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234 | menu : this.menu, |
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235 | renderTo: this.afterCt |
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236 | }); |
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237 | } |
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238 | }, |
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239 | |
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240 | /** |
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241 | * @private |
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242 | */ |
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243 | destroy: function() { |
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244 | Ext.destroy(this.menu, this.menuTrigger); |
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245 | } |
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246 | }); |
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247 | |
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248 | Ext.layout.boxOverflow.menu = Ext.layout.boxOverflow.Menu; |
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249 | |
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250 | |
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251 | /** |
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252 | * @class Ext.layout.boxOverflow.HorizontalMenu |
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253 | * @extends Ext.layout.boxOverflow.Menu |
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254 | * Description |
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255 | */ |
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256 | Ext.layout.boxOverflow.HorizontalMenu = Ext.extend(Ext.layout.boxOverflow.Menu, { |
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257 | |
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258 | constructor: function() { |
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259 | Ext.layout.boxOverflow.HorizontalMenu.superclass.constructor.apply(this, arguments); |
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260 | |
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261 | var me = this, |
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262 | layout = me.layout, |
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263 | origFunction = layout.calculateChildBoxes; |
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264 | |
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265 | layout.calculateChildBoxes = function(visibleItems, targetSize) { |
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266 | var calcs = origFunction.apply(layout, arguments), |
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267 | meta = calcs.meta, |
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268 | items = me.menuItems; |
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269 | |
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270 | //calculate the width of the items currently hidden solely because there is not enough space |
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271 | //to display them |
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272 | var hiddenWidth = 0; |
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273 | for (var index = 0, length = items.length; index < length; index++) { |
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274 | hiddenWidth += items[index].width; |
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275 | } |
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276 | |
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277 | meta.minimumWidth += hiddenWidth; |
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278 | meta.tooNarrow = meta.minimumWidth > targetSize.width; |
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279 | |
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280 | return calcs; |
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281 | }; |
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282 | }, |
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283 | |
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284 | handleOverflow: function(calculations, targetSize) { |
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285 | this.showTrigger(); |
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286 | |
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287 | var newWidth = targetSize.width - this.afterCt.getWidth(), |
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288 | boxes = calculations.boxes, |
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289 | usedWidth = 0, |
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290 | recalculate = false; |
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291 | |
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292 | //calculate the width of all visible items and any spare width |
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293 | for (var index = 0, length = boxes.length; index < length; index++) { |
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294 | usedWidth += boxes[index].width; |
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295 | } |
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296 | |
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297 | var spareWidth = newWidth - usedWidth, |
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298 | showCount = 0; |
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299 | |
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300 | //see if we can re-show any of the hidden components |
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301 | for (var index = 0, length = this.menuItems.length; index < length; index++) { |
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302 | var hidden = this.menuItems[index], |
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303 | comp = hidden.component, |
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304 | width = hidden.width; |
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305 | |
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306 | if (width < spareWidth) { |
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307 | comp.show(); |
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308 | |
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309 | spareWidth -= width; |
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310 | showCount ++; |
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311 | recalculate = true; |
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312 | } else { |
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313 | break; |
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314 | } |
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315 | } |
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316 | |
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317 | if (recalculate) { |
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318 | this.menuItems = this.menuItems.slice(showCount); |
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319 | } else { |
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320 | for (var i = boxes.length - 1; i >= 0; i--) { |
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321 | var item = boxes[i].component, |
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322 | right = boxes[i].left + boxes[i].width; |
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323 | |
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324 | if (right >= newWidth) { |
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325 | this.menuItems.unshift({ |
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326 | component: item, |
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327 | width : boxes[i].width |
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328 | }); |
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329 | |
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330 | item.hide(); |
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331 | } else { |
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332 | break; |
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333 | } |
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334 | } |
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335 | } |
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336 | |
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337 | if (this.menuItems.length == 0) { |
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338 | this.hideTrigger(); |
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339 | } |
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340 | |
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341 | return { |
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342 | targetSize: { |
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343 | height: targetSize.height, |
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344 | width : newWidth |
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345 | }, |
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346 | recalculate: recalculate |
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347 | }; |
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348 | } |
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349 | }); |
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350 | |
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351 | Ext.layout.boxOverflow.menu.hbox = Ext.layout.boxOverflow.HorizontalMenu; |
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