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/*
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package org.flexdock.view;

import java.awt.Component;
import java.util.HashSet;
import java.util.Set;

import javax.swing.JTabbedPane;

import org.flexdock.docking.Dockable;
import org.flexdock.docking.DockingConstants;
import org.flexdock.docking.DockingManager;
import org.flexdock.docking.activation.ActiveDockableListener;
import org.flexdock.docking.defaults.DefaultDockingPort;
import org.flexdock.docking.defaults.StandardBorderManager;

/**
 * @author Christopher Butler
 */
public class Viewport extends DefaultDockingPort implements DockingConstants {

    protected HashSet blockedRegions;

    static {
        DockingManager.setDockingStrategy(Viewport.class, View.VIEW_DOCKING_STRATEGY);
    }

    public Viewport() {
        super();
        blockedRegions = new HashSet(5);
        setBorderManager(new StandardBorderManager());
    }

    public Viewport(String portId) {
        super(portId);
        blockedRegions = new HashSet(5);
        setBorderManager(new StandardBorderManager());
    }

    public void setRegionBlocked(String region, boolean isBlocked) {
        if(isValidDockingRegion(region)) {
            if(isBlocked) {
                blockedRegions.add(region);
            } else {
                blockedRegions.remove(region);
            }
        }
    }

    @Override
    public boolean isDockingAllowed(Component comp, String region) {
        // if we're already blocked, then no need to interrogate
        // the components in this dockingport
        boolean blocked = !super.isDockingAllowed(comp, region);
        if(blocked) {
            return false;
        }

        // check to see if the region itself has been blocked for some reason
        if(blockedRegions.contains(region)) {
            return false;
        }

        // by default, allow docking in non-CENTER regions
        if(!CENTER_REGION.equals(region)) {
            return true;
        }

        // allow docking in the CENTER if there's nothing already there,
        // or if there's no Dockable associated with the component there
        Dockable dockable = getCenterDockable();
        if(dockable==null) {
            return true;
        }

        // otherwise, only allow docking in the CENTER if the dockable
        // doesn't mind
        return !dockable.getDockingProperties().isTerritoryBlocked(region).booleanValue();
    }

    public boolean dock(Dockable dockable) {
        return dock(dockable, CENTER_REGION);
    }

    @Override
    protected JTabbedPane createTabbedPane() {
        JTabbedPane pane = super.createTabbedPane();
        pane.addChangeListener(ActiveDockableListener.getInstance());
        return pane;
    }

    public Set getViewset() {
        // return ALL views, recursing to maximum depth
        return getDockableSet(-1, 0, View.class);
    }

    public Set getViewset(int depth) {
        // return all views, including subviews up to the specified depth
        return getDockableSet(depth, 0, View.class);
    }

    @Override
    protected String paramString() {
        return "id=" + getPersistentId() + "," + super.paramString();
    }
}