3 * Copyright(c) 2006-2009 Ext JS, LLC
5 * http://www.extjs.com/license
9 * <p>An Action is a piece of reusable functionality that can be abstracted out of any particular component so that it
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10 * can be usefully shared among multiple components. Actions let you share handlers, configuration options and UI
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11 * updates across any components that support the Action interface (primarily {@link Ext.Toolbar}, {@link Ext.Button}
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12 * and {@link Ext.menu.Menu} components).</p>
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13 * <p>Aside from supporting the config object interface, any component that needs to use Actions must also support
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14 * the following method list, as these will be called as needed by the Action class: setText(string), setIconCls(string),
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15 * setDisabled(boolean), setVisible(boolean) and setHandler(function).</p>
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16 * Example usage:<br>
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18 // Define the shared action. Each component below will have the same
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19 // display text and icon, and will display the same message on click.
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20 var action = new Ext.Action({
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21 {@link #text}: 'Do something',
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22 {@link #handler}: function(){
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23 Ext.Msg.alert('Click', 'You did something.');
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25 {@link #iconCls}: 'do-something',
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26 {@link #itemId}: 'myAction'
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29 var panel = new Ext.Panel({
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34 // Add the action directly to a toolbar as a menu button
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37 text: 'Action Menu',
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38 // Add the action to a menu as a text item
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43 // Add the action to the panel body as a standard button
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44 new Ext.Button(action)
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46 renderTo: Ext.getBody()
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49 // Change the text for all components using the action
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50 action.setText('Something else');
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52 // Reference an action through a container using the itemId
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53 var btn = panel.getComponent('myAction');
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54 var aRef = btn.baseAction;
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55 aRef.setText('New text');
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58 * @param {Object} config The configuration options
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60 Ext.Action = Ext.extend(Object, {
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62 * @cfg {String} text The text to set for all components using this action (defaults to '').
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65 * @cfg {String} iconCls
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66 * The CSS class selector that specifies a background image to be used as the header icon for
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67 * all components using this action (defaults to '').
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68 * <p>An example of specifying a custom icon class would be something like:
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70 // specify the property in the config for the class:
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72 iconCls: 'do-something'
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74 // css class that specifies background image to be used as the icon image:
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75 .do-something { background-image: url(../images/my-icon.gif) 0 6px no-repeat !important; }
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79 * @cfg {Boolean} disabled True to disable all components using this action, false to enable them (defaults to false).
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82 * @cfg {Boolean} hidden True to hide all components using this action, false to show them (defaults to false).
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85 * @cfg {Function} handler The function that will be invoked by each component tied to this action
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86 * when the component's primary event is triggered (defaults to undefined).
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89 * @cfg {String} itemId
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90 * See {@link Ext.Component}.{@link Ext.Component#itemId itemId}.
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93 * @cfg {Object} scope The scope (<tt><b>this</b></tt> reference) in which the
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94 * <code>{@link #handler}</code> is executed. Defaults to this Button.
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97 constructor : function(config){
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98 this.initialConfig = config;
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99 this.itemId = config.itemId = (config.itemId || config.id || Ext.id());
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107 * Sets the text to be displayed by all components using this action.
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108 * @param {String} text The text to display
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110 setText : function(text){
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111 this.initialConfig.text = text;
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112 this.callEach('setText', [text]);
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116 * Gets the text currently displayed by all components using this action.
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118 getText : function(){
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119 return this.initialConfig.text;
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123 * Sets the icon CSS class for all components using this action. The class should supply
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124 * a background image that will be used as the icon image.
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125 * @param {String} cls The CSS class supplying the icon image
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127 setIconClass : function(cls){
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128 this.initialConfig.iconCls = cls;
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129 this.callEach('setIconClass', [cls]);
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133 * Gets the icon CSS class currently used by all components using this action.
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135 getIconClass : function(){
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136 return this.initialConfig.iconCls;
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140 * Sets the disabled state of all components using this action. Shortcut method
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141 * for {@link #enable} and {@link #disable}.
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142 * @param {Boolean} disabled True to disable the component, false to enable it
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144 setDisabled : function(v){
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145 this.initialConfig.disabled = v;
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146 this.callEach('setDisabled', [v]);
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150 * Enables all components using this action.
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152 enable : function(){
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153 this.setDisabled(false);
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157 * Disables all components using this action.
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159 disable : function(){
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160 this.setDisabled(true);
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164 * Returns true if the components using this action are currently disabled, else returns false.
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166 isDisabled : function(){
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167 return this.initialConfig.disabled;
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171 * Sets the hidden state of all components using this action. Shortcut method
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172 * for <code>{@link #hide}</code> and <code>{@link #show}</code>.
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173 * @param {Boolean} hidden True to hide the component, false to show it
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175 setHidden : function(v){
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176 this.initialConfig.hidden = v;
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177 this.callEach('setVisible', [!v]);
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181 * Shows all components using this action.
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184 this.setHidden(false);
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188 * Hides all components using this action.
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191 this.setHidden(true);
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195 * Returns true if the components using this action are currently hidden, else returns false.
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197 isHidden : function(){
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198 return this.initialConfig.hidden;
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202 * Sets the function that will be called by each Component using this action when its primary event is triggered.
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203 * @param {Function} fn The function that will be invoked by the action's components. The function
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204 * will be called with no arguments.
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205 * @param {Object} scope The scope (<code>this</code> reference) in which the function is executed. Defaults to the Component firing the event.
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207 setHandler : function(fn, scope){
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208 this.initialConfig.handler = fn;
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209 this.initialConfig.scope = scope;
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210 this.callEach('setHandler', [fn, scope]);
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214 * Executes the specified function once for each Component currently tied to this action. The function passed
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215 * in should accept a single argument that will be an object that supports the basic Action config/method interface.
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216 * @param {Function} fn The function to execute for each component
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217 * @param {Object} scope The scope (<code>this</code> reference) in which the function is executed. Defaults to the Component.
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219 each : function(fn, scope){
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220 Ext.each(this.items, fn, scope);
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224 callEach : function(fnName, args){
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225 var cs = this.items;
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226 for(var i = 0, len = cs.length; i < len; i++){
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227 cs[i][fnName].apply(cs[i], args);
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232 addComponent : function(comp){
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233 this.items.push(comp);
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234 comp.on('destroy', this.removeComponent, this);
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238 removeComponent : function(comp){
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239 this.items.remove(comp);
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243 * Executes this action manually using the handler function specified in the original config object
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244 * or the handler function set with <code>{@link #setHandler}</code>. Any arguments passed to this
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245 * function will be passed on to the handler function.
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246 * @param {Mixed} arg1 (optional) Variable number of arguments passed to the handler function
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247 * @param {Mixed} arg2 (optional)
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248 * @param {Mixed} etc... (optional)
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250 execute : function(){
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251 this.initialConfig.handler.apply(this.initialConfig.scope || window, arguments);
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