/*

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

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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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Widgets.

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WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

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*/

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

// The ListView class implements a vertical list view that hosts controls

// as child components.

// Constructor.

function ListView(id, caption) {

    if (id != UI_NO_INIT_ID) {

        this.init(id, caption);

    }

}

// ListView inherits from View.

ListView.prototype = new View(UI_NO_INIT_ID);

// The caption of this view; null if none.

ListView.prototype.caption = null;

// The caption element of this view.

ListView.prototype.captionElement = null;

// The caption text element of this view.

ListView.prototype.captionTextElement = null;

// Root HTML element for controls.

ListView.prototype.listElement = null;

// List of controls in the view.

ListView.prototype.controls = null;

// Initializer for ListView.

ListView.prototype.init = function(id, caption) {

    uiLogger.debug("ListView.init(" + id + ", " + caption + ")");

    // call superclass initializer

    View.prototype.init.call(this, id);

    // init control array

    this.controls = [];

    // set style class name for root element

    this.rootElement.className = "ListView";

    // create caption and caption text elements

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

    this.captionElement.className = "ListViewCaptionText";

    this.rootElement.appendChild(this.captionElement);

    // create root element for controls and add to the view root element

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

    this.listElement.className = "ListViewControlList";

    this.rootElement.appendChild(this.listElement);

    // set the caption

    this.setCaption(caption);

}

// Returns the caption; null if none.

ListView.prototype.getCaption = function() {

    return this.caption;

}

// Sets the caption; null if none.

ListView.prototype.setCaption = function(caption) {

    uiLogger.debug("ListView.setCaption(" + caption + ")");

    // set the display style

    this.captionElement.style.display = (caption == null) ? "none" : "block";

    // set the caption

    this.caption = caption;

    this.captionElement.innerHTML = (caption == null) ? "" : caption;

}

// Returns an array of controls in the view.

ListView.prototype.getControls = function() {

    return this.controls;

}

// Adds a control to the view.

ListView.prototype.addControl = function(control) {

    uiLogger.debug("ListView.addControl(" + control + ")");

    // add the control to the controls array and attach it to the list element

    this.controls.push(control);

    this.listElement.appendChild(control.rootElement);

    control.view = this;

}

// Inserts a control to the view before the specified control.

ListView.prototype.insertControl = function(control, beforeControl) {

    uiLogger.debug("ListView.insertControl(" + control + ", " + beforeControl + ")");

    // iterate through current controls

    for (var i = 0; i < this.controls.length; i++) {

        // is this the control we should insert before?

        if (this.controls[i] == beforeControl) {

            // we found the control to insert before - insert here and connect to list element

            this.controls.splice(i, 0, control);

            this.listElement.insertBefore(control.rootElement, beforeControl.rootElement);

            control.view = this;

            return;

        }

    }

    // the control wasn't found so we'll add it last

    this.addControl(control);

}

// Removes a control from the view.

ListView.prototype.removeControl = function(control) {

    uiLogger.debug("ListView.removeControl(" + control + ")");

    // iterate through current controls

    for (var i = 0; i < this.controls.length; i++) {

        // is this the control we should remove?

        if (this.controls[i] == control) {

            // we found the control to remove - remove it from the list element

            this.controls.splice(i, 1);

            this.listElement.removeChild(control.rootElement);

            control.view = null;

        }

    }

}

// Removes a control from the view.

ListView.prototype.removeAllControls = function() {

    // iterate through current controls

    for (var i = 0; i < this.controls.length; i++) {

        // we found the control to remove - remove it from the list element

		var control = this.controls[i];

        this.listElement.removeChild(control.rootElement);

        control.view = null;

    }

    this.controls = new Array();

}

// Attempts to focus the first focusable control.

ListView.prototype.focusFirstControl = function() {

    uiLogger.debug("ListView.focusFirstControl()");

    for (var i = 0; i < this.controls.length; i++) {

        // is this control focusable?

        var control = this.controls[i];

        if (control.isFocusable()) {

            control.setFocused(true);

            break;

        }

    }

}

// Attempts to reset all control focus states.

// Override in subclasses as required.

ListView.prototype.resetControlFocusStates = function() {

    uiLogger.debug("ListView.resetControlFocusStates()");

    for (var i = 0; i < this.controls.length; i++) {

        this.controls[i].resetFocusState();

    }

}