author | Eugene Ostroukhov <eugeneo@symbian.org> |
Tue, 16 Mar 2010 18:01:11 -0700 | |
changeset 273 | b1f63c2c240c |
parent 211 | 7b148352159e |
permissions | -rw-r--r-- |
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/** |
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* Copyright (c) 2009-2010 Symbian Foundation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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/////////////////////////////////////////////////////////////////////////////// |
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// The NavigationButton class implements a button control for use in |
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// navigational contexts in menu-style UIs. |
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// Constructor. |
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function NavigationButton(id, image, text) { |
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if (id != UI_NO_INIT_ID) { |
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this.init(id, image, text); |
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} |
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} |
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||
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// NavigationButton inherits from ActionControl. |
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NavigationButton.prototype = new ActionControl(UI_NO_INIT_ID); |
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// Button table element. |
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NavigationButton.prototype.tableElement = null; |
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// Button table row element. |
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NavigationButton.prototype.tableRowElement = null; |
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// Button table left cell element. |
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NavigationButton.prototype.tableLeftCellElement = null; |
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// Button table right cell element. |
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NavigationButton.prototype.tableRightCellElement = null; |
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// Button image element. |
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NavigationButton.prototype.imageElement = null; |
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// Button link element. |
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NavigationButton.prototype.linkElement = null; |
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// Button text element. |
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NavigationButton.prototype.textElement = null; |
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// Initializer - called from constructor. |
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NavigationButton.prototype.init = function(id, image, text) { |
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uiLogger.debug("NavigationButton.init(" + id + ", " + image + ", " + text + ")"); |
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// call superclass initializer |
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ActionControl.prototype.init.call(this, id, null); |
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// remove caption element |
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this.assemblyElement.removeChild(this.captionElement); |
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// construct the button |
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this.buttonElement = document.createElement("div"); |
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this.tableElement = document.createElement("table"); |
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this.tableRowElement = document.createElement("tr"); |
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this.tableLeftCellElement = document.createElement("td"); |
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this.tableRightCellElement = document.createElement("td"); |
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this.imageElement = null; |
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this.linkElement = document.createElement("a"); |
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this.linkElement.href = "JavaScript:void(0)"; |
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this.textElement = document.createElement("span"); |
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this.tableElement.appendChild(this.tableRowElement); |
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this.tableRowElement.appendChild(this.tableLeftCellElement); |
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this.tableRowElement.appendChild(this.tableRightCellElement); |
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this.tableRightCellElement.appendChild(this.linkElement); |
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this.linkElement.appendChild(this.textElement); |
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this.buttonElement.appendChild(this.tableElement); |
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this.controlElement.appendChild(this.buttonElement); |
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// set the image and text |
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this.setImage(image); |
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this.setText(text); |
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// bind event listeners |
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this.bindActionControlListeners(); |
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// update the style |
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this.updateStyleFromState(); |
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}; |
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// Sets the enabled state. |
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NavigationButton.prototype.setEnabled = function(enabled) { |
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uiLogger.debug("NavigationButton.setEnabled(" + enabled + ")"); |
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// bail out early if there is no change in state |
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if (this.enabled == enabled) { |
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return; |
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} |
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// set the enabled state |
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this.enabled = enabled; |
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if (this.enabled) { |
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// diabled -> enabled |
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this.tableRightCellElement.removeChild(this.textElement); |
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this.tableRightCellElement.appendChild(this.linkElement); |
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this.linkElement.appendChild(this.textElement); |
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} else { |
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// enabled -> diabled |
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this.linkElement.removeChild(this.textElement); |
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this.tableRightCellElement.removeChild(this.linkElement); |
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this.tableRightCellElement.appendChild(this.textElement); |
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} |
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// update the style |
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this.updateStyleFromState(); |
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}; |
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// Returns the button image (URL); null if none. |
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NavigationButton.prototype.getImage = function() { |
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return (this.imageElement != null) ? this.imageElement.src : null; |
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}; |
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// Sets the button image (URL); null if none. |
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NavigationButton.prototype.setImage = function(image) { |
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uiLogger.debug("NavigationButton.setImage(" + image + ")"); |
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if (image == null) { |
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// remove image - if any |
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if (this.imageElement != null) { |
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this.tableLeftCellElement.removeChild(this.imageElement); |
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} |
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} else { |
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// default to not append image element |
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var append = false; |
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// create image element if one doesn't exist |
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if (this.imageElement == null) { |
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this.imageElement = document.createElement("img"); |
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this.imageElement.setAttribute("alt", ""); |
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append = true; |
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} |
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// set image source URL |
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this.imageElement.src = image; |
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// append the image element to the left cell? |
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if (append) { |
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this.tableLeftCellElement.appendChild(this.imageElement); |
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} |
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} |
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}; |
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// Returns the button text. |
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NavigationButton.prototype.getText = function() { |
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return this.textElement.innerHTML; |
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}; |
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// Sets the button text. |
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NavigationButton.prototype.setText = function(text) { |
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uiLogger.debug("NavigationButton.setText(" + text + ")"); |
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this.textElement.innerHTML = (text == null) ? "" : text;; |
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}; |
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// Updates the style of the control to reflects the state of the control. |
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NavigationButton.prototype.updateStyleFromState = function() { |
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uiLogger.debug("NavigationButton.updateStyleFromState()"); |
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// determine the state name |
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var stateName = this.getStyleStateName(); |
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// set root element class name |
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this.setClassName(this.rootElement, "Control"); |
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// set the control assembly class names |
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this.setClassName(this.assemblyElement, "ControlAssembly ControlAssembly" + stateName); |
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// control element |
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this.setClassName(this.controlElement, "ControlElement NavigationButtonControlElement"); |
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// set the button table class names |
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this.setClassName(this.buttonElement, "NavigationButton"); |
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this.setClassName(this.tableElement, "NavigationButtonTable"); |
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this.setClassName(this.tableRowElement, "NavigationButtonRow"); |
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this.setClassName(this.tableLeftCellElement, "NavigationButtonImageCell"); |
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this.setClassName(this.tableRightCellElement, "NavigationButtonTextCell"); |
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// set image class names |
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if (this.imageElement) { |
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this.setClassName(this.imageElement, "NavigationButtonImage"); |
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} |
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// set the button text class name |
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this.setClassName(this.textElement, "NavigationButtonText NavigationButtonText" + stateName); |
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}; |