OSCON/WRTKit/UI/TextEntryControl.js
author John Kern <johnk@symbian.org>
Fri, 17 Jul 2009 15:52:45 -0700
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/*
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© Copyright 2008 Nokia Corporation. All rights reserved.
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IMPORTANT:  The Nokia software ("WRTKit and Example Widget files") is supplied to you by Nokia
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Corporation (“Nokia”) in consideration of your agreement to the following terms. Your use, installation
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and/or redistribution of the WRTKit and Example Widget files constitutes acceptance of these terms. If
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you do not agree with these terms, please do not use, install, or redistribute the WRTKit and Example
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Widget files.
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In consideration of your agreement to abide by the following terms, and subject to these terms, Nokia
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grants you a personal, non-exclusive license, under Nokia’s copyrights in the WRTKit and Example
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Widget files, to use, reproduce, and redistribute the WRTKit and Example files, in text form (for HTML,
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CSS, or JavaScript files) or binary form (for associated images), for the sole purpose of creating S60
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Widgets.
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If you redistribute the WRTKit and Example files, you must retain this entire notice in all such
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redistributions of the WRTKit and Example files.
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You may not use the name, trademarks, service marks or logos of Nokia to endorse or promote products
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that include the WRTKit and Example files without the prior written explicit agreement with Nokia.
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Except as expressly stated in this notice, no other rights or licenses, express or implied, are granted by
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Nokia herein, including but not limited to any patent rights that may be infringed by your products that
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incorporate the WRTKit and Example files or by other works in which the WRTKit and Example files
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may be incorporated.
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The WRTKit and Example files are provided on an "AS IS" basis.  NOKIA MAKES NO
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WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
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WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE, REGARDING THE EXAMPLES OR ITS USE AND OPERATION
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ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL NOKIA BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, AND/OR
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DISTRIBUTION OF THE EXAMPLES, HOWEVER CAUSED AND WHETHER UNDER THEORY
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OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE,
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EVEN IF NOKIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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///////////////////////////////////////////////////////////////////////////////
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// The TextEntryControl class is an abstract base class for the single and multi-
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// line text entry controls TextField and TextArea. Don't use TextEntryControl
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// directly.
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// Constructor.
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function TextEntryControl(id, caption) {
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    if (id != UI_NO_INIT_ID) {
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        this.init(id, caption);
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    }
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}
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// TextEntryControl inherits from Control.
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TextEntryControl.prototype = new Control(UI_NO_INIT_ID);
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// Reference to the peer HTML element.
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TextEntryControl.prototype.peerElement = null;
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// Initializer - called from constructor.
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TextEntryControl.prototype.init = function(id, caption) {
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    uiLogger.debug("TextEntryControl.init(" + id + ", " + caption + ")");
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    // call superclass initializer
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    Control.prototype.init.call(this, id, caption);
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}
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// Common event listeners hookup function called from subclasses.
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TextEntryControl.prototype.bindTextEntryControlListeners = function() {
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    var self = this;
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    this.peerElement.addEventListener("focus", function() { self.focusStateChanged(true); }, false);
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    this.peerElement.addEventListener("blur", function() { self.focusStateChanged(false); }, false);
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    this.peerElement.addEventListener("mouseover", function() { self.hoverStateChanged(true); }, false);
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    this.peerElement.addEventListener("mouseout", function() { self.hoverStateChanged(false); }, false);
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    this.peerElement.addEventListener("change", function() { self.valueChanged(); }, false);
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}
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// Returns the enabled state.
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// Override this in subclasses as required to implement the state change.
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TextEntryControl.prototype.isEnabled = function() {
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    return !this.peerElement.readOnly;
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}
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// Sets the enabled state.
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// Override this in subclasses as required to implement the state change.
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TextEntryControl.prototype.setEnabled = function(enabled) {
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    uiLogger.debug("TextEntryControl.setEnabled(" + enabled + ")");
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    this.peerElement.readOnly = !enabled;
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    // update the style
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    this.updateStyleFromState();
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}
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// Returns the control text.
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TextEntryControl.prototype.getText = function() {
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    return this.peerElement.value;
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}
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// Sets the text for the control.
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TextEntryControl.prototype.setText = function(text) {
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    this.peerElement.value = text;
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}
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// Returns the focusable state for the control.
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TextEntryControl.prototype.isFocusable = function() {
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    // text entry controls are always focusable
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    return true;
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}
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// Sets the focused state for the control.
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// Note: This may not always succeed.
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TextEntryControl.prototype.setFocused = function(focused) {
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
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    uiLogger.debug("TextEntryControl.setFocused(" + focused + ")");
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
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    if (focused) {
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
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        this.peerElement.focus();
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
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   115
    } else {
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
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        this.peerElement.blur();
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
parents:
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   117
    }
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
parents:
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   118
}
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
parents:
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   119
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
parents:
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   120
// Callback for value change events.
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
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   121
TextEntryControl.prototype.valueChanged = function() {
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
parents:
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   122
    uiLogger.debug("TextEntryControl.valueChanged()");
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
parents:
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   123
    // notify event listeners
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
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   124
    this.fireEvent(this.createEvent("ValueChanged", this.peerElement.value));
97dcd250e5be checking in an application written by Ivan Litovski. If you're going to OSCon, this is a must.
John Kern <johnk@symbian.org>
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   125
}