/*
* 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.help;
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.Size;
import org.apache.isis.viewer.dnd.drawing.Text;
import org.apache.isis.viewer.dnd.view.Click;
import org.apache.isis.viewer.dnd.view.Toolkit;
import org.apache.isis.viewer.dnd.view.ViewConstants;
import org.apache.isis.viewer.dnd.view.base.AbstractView;
import org.apache.isis.viewer.dnd.view.content.NullContent;
import org.apache.isis.viewer.dnd.view.text.TextBlockTarget;
import org.apache.isis.viewer.dnd.view.text.TextContent;
public class HelpView extends AbstractView implements TextBlockTarget {
private static final int HEIGHT = 350;
private static final int WIDTH = 400;
private static final int MAX_TEXT_WIDTH = 375;
private final TextContent content;
public HelpView(final String name, final String description, final String help) {
super(new NullContent());
final String text = (name == null || name.trim().equals("") ? "" : (name + "\n")) + (description == null || description.trim().equals("") ? "" : (description + "\n")) + (help == null ? "" : help);
content = new TextContent(this, 10, TextContent.WRAPPING);
content.setText(text);
}
@Override
public void draw(final Canvas canvas) {
int x = 0;
int y = 0;
final int xEntent = getSize().getWidth() - 1;
final int yExtent = getSize().getHeight() - 1;
final int arc = 9;
canvas.drawSolidRectangle(x + 2, y + 2, xEntent - 4, yExtent - 4, Toolkit.getColor(ColorsAndFonts.COLOR_WHITE));
final Color black = Toolkit.getColor(ColorsAndFonts.COLOR_BLACK);
canvas.drawRoundedRectangle(x, y++, xEntent, yExtent, arc, arc, black);
canvas.drawRoundedRectangle(x + 1, y++, xEntent - 2, yExtent - 2, arc, arc, Toolkit.getColor(ColorsAndFonts.COLOR_SECONDARY2));
canvas.drawRoundedRectangle(x + 2, y++, xEntent - 4, yExtent - 4, arc, arc, black);
x += 10;
y += ViewConstants.VPADDING;
y += Toolkit.getText(ColorsAndFonts.TEXT_TITLE).getTextHeight();
canvas.drawText("Help", x, y, black, Toolkit.getText(ColorsAndFonts.TEXT_TITLE));
final String[] lines = content.getDisplayLines();
for (final String line : lines) {
y += Toolkit.getText(ColorsAndFonts.TEXT_NORMAL).getLineHeight();
canvas.drawText(line, x, y, MAX_TEXT_WIDTH, black, Toolkit.getText(ColorsAndFonts.TEXT_NORMAL));
}
}
@Override
public Size getRequiredSize(final Size availableSpace) {
final int height = Math.min(HEIGHT, availableSpace.getHeight());
final int width = Math.min(WIDTH, availableSpace.getWidth());
return new Size(width, height);
}
/**
* Removes the help view when clicked on.
*/
@Override
public void firstClick(final Click click) {
getViewManager().clearOverlayView(this);
}
@Override
public int getMaxFieldWidth() {
return WIDTH - 20;
}
@Override
public Text getText() {
return Toolkit.getText(ColorsAndFonts.TEXT_NORMAL);
}
}