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share/src/widgets/layout/AnchorLayout.js  view on Meta::CPAN

     * <li><b>Percentage</b> : Any value between 1 and 100, expressed as a percentage.<div class="sub-desc">
     * The first anchor is the percentage width that the item should take up within the container, and the
     * second is the percentage height.  For example:<pre><code>
// two values specified
anchor: '100% 50%' // render item complete width of the container and
                   // 1/2 height of the container
// one value specified
anchor: '100%'     // the width value; the height will default to auto
     * </code></pre></div></li>
     *
     * <li><b>Offsets</b> : Any positive or negative integer value.<div class="sub-desc">
     * This is a raw adjustment where the first anchor is the offset from the right edge of the container,
     * and the second is the offset from the bottom edge. For example:<pre><code>
// two values specified
anchor: '-50 -100' // render item the complete width of the container
                   // minus 50 pixels and
                   // the complete height minus 100 pixels.
// one value specified
anchor: '-50'      // anchor value is assumed to be the right offset value
                   // bottom offset will default to 0
     * </code></pre></div></li>
     *
     * <li><b>Sides</b> : Valid values are <tt>'right'</tt> (or <tt>'r'</tt>) and <tt>'bottom'</tt>
     * (or <tt>'b'</tt>).<div class="sub-desc">
     * Either the container must have a fixed size or an anchorSize config value defined at render time in
     * order for these to have any effect.</div></li>
     *
     * <li><b>Mixed</b> : <div class="sub-desc">
     * Anchor values can also be mixed as needed.  For example, to render the width offset from the container
     * right edge by 50 pixels and 75% of the container's height use:
     * <pre><code>
anchor: '-50 75%'
     * </code></pre></div></li>
     *
     *
     * </ul></div>
     */

    // private
    monitorResize : true,

    type : 'anchor',

    /**
     * @cfg {String} defaultAnchor
     *
     * default anchor for all child container items applied if no anchor or specific width is set on the child item.  Defaults to '100%'.
     *
     */
    defaultAnchor : '100%',

    parseAnchorRE : /^(r|right|b|bottom)$/i,


    getLayoutTargetSize : function() {
        var target = this.container.getLayoutTarget(), ret = {};
        if (target) {
            ret = target.getViewSize();

            // IE in strict mode will return a width of 0 on the 1st pass of getViewSize.
            // Use getStyleSize to verify the 0 width, the adjustment pass will then work properly
            // with getViewSize
            if (Ext.isIE9m && Ext.isStrict && ret.width == 0){
                ret =  target.getStyleSize();
            }
            ret.width -= target.getPadding('lr');
            ret.height -= target.getPadding('tb');
        }
        return ret;
    },

    // private
    onLayout : function(container, target) {
        Ext.layout.AnchorLayout.superclass.onLayout.call(this, container, target);

        var size = this.getLayoutTargetSize(),
            containerWidth = size.width,
            containerHeight = size.height,
            overflow = target.getStyle('overflow'),
            components = this.getRenderedItems(container),
            len = components.length,
            boxes = [],
            box,
            anchorWidth,
            anchorHeight,
            component,
            anchorSpec,
            calcWidth,
            calcHeight,
            anchorsArray,
            totalHeight = 0,
            i,
            el;

        if(containerWidth < 20 && containerHeight < 20){
            return;
        }

        // find the container anchoring size
        if(container.anchorSize) {
            if(typeof container.anchorSize == 'number') {
                anchorWidth = container.anchorSize;
            } else {
                anchorWidth = container.anchorSize.width;
                anchorHeight = container.anchorSize.height;
            }
        } else {
            anchorWidth = container.initialConfig.width;
            anchorHeight = container.initialConfig.height;
        }

        for(i = 0; i < len; i++) {
            component = components[i];
            el = component.getPositionEl();

            // If a child container item has no anchor and no specific width, set the child to the default anchor size
            if (!component.anchor && component.items && !Ext.isNumber(component.width) && !(Ext.isIE6 && Ext.isStrict)){
                component.anchor = this.defaultAnchor;
            }

            if(component.anchor) {