/*
* 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.table;
import org.apache.isis.core.commons.exceptions.IsisException;
import org.apache.isis.core.metamodel.spec.feature.ObjectAssociation;
import org.apache.isis.viewer.dnd.drawing.Bounds;
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.Click;
import org.apache.isis.viewer.dnd.view.Content;
import org.apache.isis.viewer.dnd.view.DragEvent;
import org.apache.isis.viewer.dnd.view.DragStart;
import org.apache.isis.viewer.dnd.view.InternalDrag;
import org.apache.isis.viewer.dnd.view.Toolkit;
import org.apache.isis.viewer.dnd.view.View;
import org.apache.isis.viewer.dnd.view.ViewAreaType;
import org.apache.isis.viewer.dnd.view.base.AbstractView;
import org.apache.isis.viewer.dnd.view.border.ResizeDrag;
import org.apache.isis.viewer.dnd.view.collection.CollectionContent;
public class TableHeader extends AbstractView {
private final TableAxis axis;
private final int height;
private int resizeColumn;
public TableHeader(final Content content, final TableAxis axis) {
super(content, null);
this.axis = axis;
height = VPADDING + Toolkit.getText(ColorsAndFonts.TEXT_LABEL).getTextHeight() + VPADDING;
}
@Override
public void firstClick(final Click click) {
if (click.getLocation().getY() <= height) {
final int column = axis.getColumnAt(click.getLocation().getX()) - 1;
if (column == -2) {
super.firstClick(click);
} else if (column == -1) {
((CollectionContent) getContent()).setOrderByElement();
invalidateContent();
} else {
final ObjectAssociation field = axis.getFieldForColumn(column);
((CollectionContent) getContent()).setOrderByField(field);
invalidateContent();
}
} else {
super.firstClick(click);
}
}
@Override
public void invalidateContent() {
getParent().invalidateContent();
}
@Override
public Size getRequiredSize(final Size availableSpace) {
return new Size(-1, height);
}
@Override
public DragEvent dragStart(final DragStart drag) {
if (isOverColumnBorder(drag.getLocation())) {
resizeColumn = axis.getColumnBorderAt(drag.getLocation().getX());
final Bounds resizeArea = new Bounds(getView().getAbsoluteLocation(), getSize());
resizeArea.translate(getView().getPadding().getLeft(), getView().getPadding().getTop());
if (resizeColumn == 0) {
resizeArea.setWidth(axis.getHeaderOffset());
} else {
resizeArea.translate(axis.getLeftEdge(resizeColumn - 1), 0);
resizeArea.setWidth(axis.getColumnWidth(resizeColumn - 1));
}
final Size minimumSize = new Size(70, 0);
return new ResizeDrag(this, resizeArea, ResizeDrag.RIGHT, minimumSize, null);
} else if (drag.getLocation().getY() <= height) {
return null;
} else {
return super.dragStart(drag);
}
}
@Override
public void dragTo(final InternalDrag drag) {
if (drag.getOverlay() == null) {
throw new IsisException("No overlay for drag: " + drag);
}
int newWidth = drag.getOverlay().getSize().getWidth();
newWidth = Math.max(70, newWidth);
getViewManager().getSpy().addAction("Resize column to " + newWidth);
if (resizeColumn == 0) {
axis.setOffset(newWidth);
} else {
axis.setWidth(resizeColumn - 1, newWidth);
}
axis.invalidateLayout();
}
@Override
public void draw(final Canvas canvas) {
super.draw(canvas.createSubcanvas());
final int y = VPADDING + Toolkit.getText(ColorsAndFonts.TEXT_LABEL).getAscent();
int x = axis.getHeaderOffset() - 2;
if (((CollectionContent) getContent()).getOrderByElement()) {
drawOrderIndicator(canvas, axis, x - 10);
}
final Color secondary1 = Toolkit.getColor(ColorsAndFonts.COLOR_SECONDARY1);
canvas.drawLine(0, 0, getSize().getWidth() - 1, 0, secondary1);
canvas.drawLine(0, height - 1, getSize().getWidth() - 1, height - 1, secondary1);
canvas.drawLine(x, 0, x, getSize().getHeight() - 1, secondary1);
x++;
final int columns = axis.getColumnCount();
final ObjectAssociation fieldSortOrder = ((CollectionContent) getContent()).getFieldSortOrder();
for (int i = 0; i < columns; i++) {
if (fieldSortOrder == axis.getFieldForColumn(i)) {
drawOrderIndicator(canvas, axis, x + axis.getColumnWidth(i) - 10);
}
canvas.drawLine(0, 0, 0, getSize().getHeight() - 1, secondary1);
canvas.drawLine(x, 0, x, getSize().getHeight() - 1, secondary1);
final Canvas headerCanvas = canvas.createSubcanvas(x, 0, axis.getColumnWidth(i) - 1, height);
headerCanvas.drawText(axis.getColumnName(i), HPADDING, y, secondary1, Toolkit.getText(ColorsAndFonts.TEXT_LABEL));
x += axis.getColumnWidth(i);
}
// Color secondary2 = Toolkit.getColor(ColorsAndFonts.COLOR_SECONDARY2);
// canvas.drawLine(x, 0, x, getSize().getHeight() - 1, secondary2);
// canvas.drawRectangle(0, height, getSize().getWidth() - 1,
// getSize().getHeight() - height - 1, secondary2);
}
private void drawOrderIndicator(final Canvas canvas, final TableAxis axis, final int x) {
Shape arrow;
arrow = new Shape();
if (((CollectionContent) getContent()).getReverseSortOrder()) {
arrow.addPoint(0, 7);
arrow.addPoint(3, 0);
arrow.addPoint(6, 7);
} else {
arrow.addPoint(0, 0);
arrow.addPoint(6, 0);
arrow.addPoint(3, 7);
}
// canvas.drawRectangle(x + axis.getColumnWidth(i) - 10, 3, 7, 8,
// Toolkit.getColor("secondary3"));
canvas.drawShape(arrow, x, 3, Toolkit.getColor(ColorsAndFonts.COLOR_SECONDARY2));
}
@Override
public View identify(final Location location) {
getViewManager().getSpy().addTrace("Identify over column " + location);
if (isOverColumnBorder(location)) {
getViewManager().getSpy().addAction("Identified over column ");
return getView();
}
return super.identify(location);
}
private boolean isOverColumnBorder(final Location at) {
final int x = at.getX();
return axis.getColumnBorderAt(x) >= 0;
}
@Override
public void mouseMoved(final Location at) {
if (isOverColumnBorder(at)) {
getFeedbackManager().showResizeRightCursor();
} else {
super.mouseMoved(at);
getFeedbackManager().showDefaultCursor();
}
}
@Override
public void secondClick(final Click click) {
if (isOverColumnBorder(click.getLocation())) {
final int column = axis.getColumnBorderAt(click.getLocation().getX()) - 1;
if (column == -1) {
final View[] subviews = getSubviews();
for (final View row : subviews) {
axis.ensureOffset(((TableRowBorder) row).requiredTitleWidth());
}
} else {
final View[] subviews = getSubviews();
int max = 0;
for (final View row : subviews) {
final View cell = row.getSubviews()[column];
max = Math.max(max, cell.getRequiredSize(new Size()).getWidth());
}
axis.setWidth(column, max);
}
axis.invalidateLayout();
} else {
super.secondClick(click);
}
}
@Override
public String toString() {
return "TableHeader";
}
@Override
public ViewAreaType viewAreaType(final Location at) {
final int x = at.getX();
if (axis.getColumnBorderAt(x) >= 0) {
return ViewAreaType.INTERNAL;
} else {
return super.viewAreaType(at);
}
}
}