co.fxl.gui.gwt.GWTDockPanel.java Source code

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Here is the source code for co.fxl.gui.gwt.GWTDockPanel.java

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/**
 * Copyright (c) 2010-2015 Dangelmayr IT GmbH. All rights reserved.
 *  
 * This file is part of FXL GUI API.
 *  
 * FXL GUI API is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *  
 * FXL GUI API is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *  
 * You should have received a copy of the GNU General Public License
 * along with FXL GUI API.  If not, see <http://www.gnu.org/licenses/>.
 */
package co.fxl.gui.gwt;

import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;

import co.fxl.gui.api.IContainer;
import co.fxl.gui.api.IDockPanel;

import com.google.gwt.user.client.ui.DockPanel;
import com.google.gwt.user.client.ui.DockPanel.DockLayoutConstant;
import com.google.gwt.user.client.ui.HasAlignment;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

class GWTDockPanel extends GWTPanel<DockPanel, IDockPanel> implements IDockPanel {

    private List<DockLayoutConstant> positions = new LinkedList<DockLayoutConstant>(
            Arrays.asList(new DockLayoutConstant[] { DockPanel.CENTER, DockPanel.NORTH, DockPanel.WEST,
                    DockPanel.EAST, DockPanel.SOUTH }));
    private int height = -1;

    @SuppressWarnings("unchecked")
    GWTDockPanel(GWTContainer<?> container) {
        super((GWTContainer<DockPanel>) container);
        widget().setWidth("100%");
        widget().setVerticalAlignment(HasAlignment.ALIGN_TOP);
        widget().setHorizontalAlignment(HasAlignment.ALIGN_LEFT);
        widget().setBorderWidth(0);
        widget().setSpacing(0);
    }

    @Override
    public IDockPanel height(int height) {
        this.height = height;
        return super.height(height);
    }

    @Override
    public void add(Widget widget) {
        // if (!(widget instanceof ScrollPanel))
        // widget.getElement().getStyle().setOverflow(Overflow.HIDDEN);
        DockLayoutConstant location = positions.remove(0);
        container.widget.add(widget, location);
        if (widget instanceof HasHorizontalAlignment) {
            ((HasHorizontalAlignment) widget).setHorizontalAlignment(HorizontalPanel.ALIGN_LEFT);
        }
        if (widget instanceof HasVerticalAlignment) {
            ((HasVerticalAlignment) widget).setVerticalAlignment(VerticalPanel.ALIGN_TOP);
        }
        if (location.equals(DockPanel.SOUTH) || location.equals(DockPanel.NORTH)
                || location.equals(DockPanel.CENTER)) {
            container.widget.setCellWidth(widget, "100%");
            widget.setWidth("100%");
        }
        if (location.equals(DockPanel.EAST) || location.equals(DockPanel.WEST)
                || location.equals(DockPanel.CENTER)) {
            container.widget.setCellHeight(widget, height != -1 ? height + "px" : "100%");
            widget.setHeight(height != -1 ? height + "px" : "100%");
        }
    }

    private void setPosition(DockLayoutConstant position) {
        positions.remove(position);
        positions.add(0, position);
    }

    @Override
    public IContainer center() {
        setPosition(DockPanel.CENTER);
        return add();
    }

    @Override
    public IContainer left() {
        setPosition(DockPanel.WEST);
        return add();
    }

    @Override
    public IContainer top() {
        setPosition(DockPanel.NORTH);
        return add();
    }

    @Override
    public IContainer bottom() {
        setPosition(DockPanel.SOUTH);
        return add();
    }

    @Override
    public IContainer right() {
        setPosition(DockPanel.EAST);
        return add();
    }

    @Override
    public IDockPanel spacing(int pixel) {
        super.container.widget.setSpacing(pixel);
        return this;
    }
}