cc.alcina.framework.gwt.client.widget.GlassDisplayer.java Source code

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Here is the source code for cc.alcina.framework.gwt.client.widget.GlassDisplayer.java

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/* 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package cc.alcina.framework.gwt.client.widget;

import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Style;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.RootPanel;

import cc.alcina.framework.gwt.client.util.WidgetUtils;

/**
 * 
 * @author Nick Reddel
 */
public class GlassDisplayer {
    public static int DEFAULT_OPACITY = 50;

    private int opacity = GlassDisplayer.DEFAULT_OPACITY;

    private PopupPanel glass;

    private FlowPanelClickable fp;

    public FlowPanelClickable getFp() {
        return this.fp;
    }

    public int getOpacity() {
        return opacity;
    }

    public void setModal(boolean modal) {
        this.glass.setModal(modal);
    }

    public void setOpacity(int opacity) {
        this.opacity = opacity;
        updateOpacity();
    }

    public void show(boolean show) {
        RootPanel.get().setStyleName("glass-showing", show);
        if (!show) {
            if (glass != null) {
                glass.hide();
            }
            return;
        }
        if (glass == null) {
            glass = new PopupPanel();
            fp = new FlowPanelClickable();
            fp.setStyleName("alcina-GlassPanel");
            fp.setWidth(Window.getClientWidth() + "px");
            fp.setHeight(Math.max(Document.get().getBody().getOffsetHeight(), Window.getClientHeight()) + "px");
            Style style = fp.getElement().getStyle();
            style.setBackgroundColor("#000");
            updateOpacity();
            glass.setStyleName("alcina-GlassPopup");
            glass.add(fp);
            glass.setAnimationEnabled(false);
        }
        glass.show();
    }

    private void updateOpacity() {
        if (fp != null) {
            WidgetUtils.setOpacity(fp, opacity);
        }
    }
}