com.sencha.gxt.widget.core.client.button.ButtonGroup.java Source code

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Here is the source code for com.sencha.gxt.widget.core.client.button.ButtonGroup.java

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/**
 * Sencha GXT 4.0.0 - Sencha for GWT
 * Copyright (c) 2006-2015, Sencha Inc.
 *
 * licensing@sencha.com
 * http://www.sencha.com/products/gxt/license/
 *
 * ================================================================================
 * Open Source License
 * ================================================================================
 * This version of Sencha GXT is licensed under the terms of the Open Source GPL v3
 * license. You may use this license only if you are prepared to distribute and
 * share the source code of your application under the GPL v3 license:
 * http://www.gnu.org/licenses/gpl.html
 *
 * If you are NOT prepared to distribute and share the source code of your
 * application under the GPL v3 license, other commercial and oem licenses
 * are available for an alternate download of Sencha GXT.
 *
 * Please see the Sencha GXT Licensing page at:
 * http://www.sencha.com/products/gxt/license/
 *
 * For clarification or additional options, please contact:
 * licensing@sencha.com
 * ================================================================================
 *
 *
 * ================================================================================
 * Disclaimer
 * ================================================================================
 * THIS SOFTWARE IS DISTRIBUTED "AS-IS" WITHOUT ANY WARRANTIES, CONDITIONS AND
 * REPRESENTATIONS WHETHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE
 * IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY, MERCHANTABLE QUALITY,
 * FITNESS FOR A PARTICULAR PURPOSE, DURABILITY, NON-INFRINGEMENT, PERFORMANCE AND
 * THOSE ARISING BY STATUTE OR FROM CUSTOM OR USAGE OF TRADE OR COURSE OF DEALING.
 * ================================================================================
 */
package com.sencha.gxt.widget.core.client.button;

import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.sencha.gxt.core.client.dom.XDOM;
import com.sencha.gxt.core.client.dom.XElement;
import com.sencha.gxt.core.client.util.Size;
import com.sencha.gxt.widget.core.client.container.SimpleContainer;

public class ButtonGroup extends SimpleContainer {

    public interface ButtonGroupAppearance {
        void render(SafeHtmlBuilder sb);

        void setHeading(XElement parent, SafeHtml html);

        void onHideHeader(XElement parent, boolean hide);

        XElement getHeaderElement(XElement parent);

        XElement getContentElem(XElement parent);

        int getFrameHeight(XElement parent);

        int getFrameWidth(XElement parent);
    }

    private final ButtonGroupAppearance appearance;
    private SafeHtml heading = SafeHtmlUtils.EMPTY_SAFE_HTML;

    public ButtonGroup() {
        this(GWT.<ButtonGroupAppearance>create(ButtonGroupAppearance.class));
    }

    public ButtonGroup(ButtonGroupAppearance appearance) {
        super(true);
        this.appearance = appearance;

        setDeferHeight(true);

        SafeHtmlBuilder builder = new SafeHtmlBuilder();
        this.appearance.render(builder);

        setElement((Element) XDOM.create(builder.toSafeHtml()));

        //    addStyleName("x-toolbar-mark");
    }

    /**
     * Returns the heading html.
     *
     * @return the heading html
     */
    public SafeHtml getHeading() {
        return heading;
    }

    /**
     * Sets the heading html.
     *
     * @param html the heading html
     */
    public void setHeading(SafeHtml html) {
        this.heading = html;
        appearance.setHeading(getElement(), heading);
    }

    /**
     * Sets the heading text.
     *
     * Text that contains reserved html characters will be escaped.
     *
     * @param text the text
     */
    public void setHeading(String text) {
        setHeading(SafeHtmlUtils.fromString(text));
    }

    public ButtonGroupAppearance getAppearance() {
        return appearance;
    }

    public void setHeaderVisible(boolean visible) {
        appearance.onHideHeader(getElement(), !visible);
    }

    @Override
    protected void onResize(int width, int height) {
        Size frameSize = getFrameSize();

        if (isAutoWidth()) {
            getContainerTarget().getStyle().clearWidth();
        } else {
            width -= frameSize.getWidth();
            getContainerTarget().setWidth(width - frameSize.getWidth(), true);

        }

        if (isAutoHeight()) {
            getContainerTarget().getStyle().clearHeight();
        } else {
            height -= frameSize.getHeight();
            height -= appearance.getHeaderElement(getElement()).getOffsetHeight();
            getContainerTarget().setHeight(height - frameSize.getHeight(), true);
        }

        super.onResize(width, height);
    }

    @Override
    protected XElement getContainerTarget() {
        return appearance.getContentElem(getElement());
    }

    protected Size getFrameSize() {
        return new Size(appearance.getFrameWidth(getElement()), appearance.getFrameHeight(getElement()));
    }

}