/*

© Copyright 2008 Nokia Corporation. All rights reserved.

IMPORTANT:  The Nokia software ("WRTKit and Example Widget files") is supplied to you by Nokia

Corporation (“Nokia”) in consideration of your agreement to the following terms. Your use, installation

and/or redistribution of the WRTKit and Example Widget files constitutes acceptance of these terms. If

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Widget files, to use, reproduce, and redistribute the WRTKit and Example files, in text form (for HTML,

CSS, or JavaScript files) or binary form (for associated images), for the sole purpose of creating S60

Widgets.

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The WRTKit and Example files are provided on an "AS IS" basis.  NOKIA MAKES NO

WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

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*/

///////////////////////////////////////////////////////////////////////////////

// The FormButton class implements a button control for use in form-style UIs.

// Constructor.

function FormButton(id, text) {

    if (id != UI_NO_INIT_ID) {

        this.init(id, text);

    }

}

// FormButton inherits from ActionControl.

FormButton.prototype = new ActionControl(UI_NO_INIT_ID);

// Button table element.

FormButton.prototype.tableElement = null;

// Button table row element.

FormButton.prototype.tableRowElement = null;

// Button table left cell element.

FormButton.prototype.tableLeftCellElement = null;

// Button table center cell element.

FormButton.prototype.tableCenterCellElement = null;

// Button text element.

FormButton.prototype.textElement = null;

// Button table right cell element.

FormButton.prototype.tableRightCellElement = null;

// Initializer - called from constructor.

FormButton.prototype.init = function(id, text) {

    uiLogger.debug("FormButton.init(" + id + ", " + text + ")");

    // call superclass initializer

    ActionControl.prototype.init.call(this, id, null);

    // remove caption element

    this.assemblyElement.removeChild(this.captionElement);

    // construct the button

    this.buttonElement = document.createElement("div");

    this.tableElement = document.createElement("table");

    this.tableRowElement = document.createElement("tr");

    this.tableLeftCellElement = document.createElement("td");

    this.tableCenterCellElement = document.createElement("td");

    this.linkElement = document.createElement("a");

    this.linkElement.href = "JavaScript:void(0)";

    this.textElement = document.createElement("span");

    this.tableRightCellElement = document.createElement("td");

    this.tableElement.appendChild(this.tableRowElement);

    this.tableRowElement.appendChild(this.tableLeftCellElement);

    this.tableRowElement.appendChild(this.tableCenterCellElement);

    this.tableCenterCellElement.appendChild(this.linkElement);

    this.linkElement.appendChild(this.textElement);

    this.tableRowElement.appendChild(this.tableRightCellElement);

    this.buttonElement.appendChild(this.tableElement);

    this.controlElement.appendChild(this.buttonElement);

    // set the text

    this.setText(text);

    // bind event listeners

    this.bindActionControlListeners();

    // update the style

    this.updateStyleFromState();

}

// Sets the enabled state.

FormButton.prototype.setEnabled = function(enabled) {

    uiLogger.debug("FormButton.setEnabled(" + enabled + ")");

    // bail out early if there is no change in state

    if (this.enabled == enabled) {

        return;

    }

    // set the enabled state

    this.enabled = enabled;

    if (this.enabled) {

        // diabled -> enabled

        this.tableCenterCellElement.removeChild(this.textElement);

        this.tableCenterCellElement.appendChild(this.linkElement);

        this.linkElement.appendChild(this.textElement);

    } else {

        // enabled -> diabled

        this.linkElement.removeChild(this.textElement);

        this.tableCenterCellElement.removeChild(this.linkElement);

        this.tableCenterCellElement.appendChild(this.textElement);

    }

    // update the style

    this.updateStyleFromState();

}

// Returns the button text.

FormButton.prototype.getText = function() {

    return this.textElement.innerHTML;

}

// Sets the button text.

FormButton.prototype.setText = function(text) {

    uiLogger.debug("FormButton.setText(" + text + ")");

    this.textElement.innerHTML = (text == null) ? "" : text;;

}

// Updates the style of the control to reflects the state of the control.

FormButton.prototype.updateStyleFromState = function() {

    uiLogger.debug("FormButton.updateStyleFromState()");

    // determine the state name

    var stateName = this.getStyleStateName();

    // set root element class name

    this.setClassName(this.rootElement, "Control");

    // set the control assembly class names

    this.setClassName(this.assemblyElement, "ControlAssembly ControlAssemblyNormal");

    // control element

    this.setClassName(this.controlElement, "ControlElement FormButtonControlElement");

    // set the button table class names

    this.setClassName(this.buttonElement, "FormButton");

    this.setClassName(this.tableElement, "FormButtonTable");

    this.setClassName(this.tableRowElement, "FormButtonRow");

    this.setClassName(this.tableLeftCellElement, "FormButtonLeftCell FormButtonLeftCell" + stateName);

    this.setClassName(this.tableCenterCellElement, "FormButtonCenterCell FormButtonLeftCell" + stateName);

    this.setClassName(this.tableRightCellElement, "FormButtonRightCell FormButtonLeftCell" + stateName);

    // set the button text class name

    this.setClassName(this.textElement, "FormButtonText FormButtonText" + stateName);

}