/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.isis.viewer.dnd.view.lookup;
import java.awt.event.KeyEvent;
import org.apache.isis.viewer.dnd.drawing.Canvas;
import org.apache.isis.viewer.dnd.drawing.Color;
import org.apache.isis.viewer.dnd.drawing.ColorsAndFonts;
import org.apache.isis.viewer.dnd.drawing.Location;
import org.apache.isis.viewer.dnd.drawing.Shape;
import org.apache.isis.viewer.dnd.drawing.Size;
import org.apache.isis.viewer.dnd.view.BackgroundTask;
import org.apache.isis.viewer.dnd.view.Click;
import org.apache.isis.viewer.dnd.view.KeyboardAction;
import org.apache.isis.viewer.dnd.view.Toolkit;
import org.apache.isis.viewer.dnd.view.View;
import org.apache.isis.viewer.dnd.view.ViewConstants;
import org.apache.isis.viewer.dnd.view.action.BackgroundWork;
import org.apache.isis.viewer.dnd.view.base.AbstractBorder;
/**
* Field border that provides a drop-down selector.
*/
public abstract class OpenDropDownBorder extends AbstractBorder {
private boolean over;
public OpenDropDownBorder(final View wrappedView) {
super(wrappedView);
right = 18;
}
protected abstract View createDropDownView();
@Override
public void draw(final Canvas canvas) {
final Size size = getSize();
final int x = size.getWidth() - right + 5 - ViewConstants.HPADDING;
final int y = (size.getHeight() - 6) / 2;
if (isAvailable()) {
final Shape triangle = new Shape(0, 0);
triangle.addPoint(6, 6);
triangle.addPoint(12, 0);
canvas.drawShape(triangle, x, y, Toolkit.getColor(ColorsAndFonts.COLOR_SECONDARY3));
if (over) {
final Color color = over ? Toolkit.getColor(ColorsAndFonts.COLOR_SECONDARY1) : Toolkit.getColor(ColorsAndFonts.COLOR_PRIMARY2);
canvas.drawSolidShape(triangle, x, y, color);
}
}
super.draw(canvas);
}
@Override
public void exited() {
if (over) {
markDamaged();
}
over = false;
super.exited();
}
@Override
public void firstClick(final Click click) {
final float x = click.getLocation().getX() - 2;
final float boundary = getSize().getWidth() - right;
if (x >= boundary) {
if (isAvailable()) {
open();
}
} else {
super.firstClick(click);
}
}
@Override
public Size getRequiredSize(final Size maximumSize) {
maximumSize.contractWidth(ViewConstants.HPADDING);
final Size size = super.getRequiredSize(maximumSize);
return size;
}
protected boolean isAvailable() {
return true;
}
@Override
public boolean canFocus() {
return isAvailable();
}
@Override
public void keyPressed(final KeyboardAction key) {
if (key.getKeyCode() == KeyEvent.VK_DOWN && isAvailable()) {
open();
key.consume();
}
super.keyPressed(key);
}
@Override
public void mouseMoved(final Location at) {
if (at.getX() >= getSize().getWidth() - right) {
getFeedbackManager().showDefaultCursor();
if (!over) {
markDamaged();
}
over = true;
} else {
if (over) {
markDamaged();
}
over = false;
super.mouseMoved(at);
}
}
private void open() {
BackgroundWork.runTaskInBackground(this, new BackgroundTask() {
@Override
public void execute() {
final View overlay = createDropDownView();
final Location location = getView().getAbsoluteLocation();
location.add(getView().getPadding().getLeft() - 1, getSize().getHeight() + 2);
overlay.setLocation(location);
getViewManager().setOverlayView(overlay);
}
@Override
public String getDescription() {
return "";
}
@Override
public String getName() {
return "Opening selector";
}
});
}
// TODO move into abstract subclass for selection list
protected abstract void setSelection(OptionContent selectedContent);
}