/*
* Copyright 2003-2011 JetBrains s.r.o.
*
* Licensed 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 jetbrains.mps.nodeEditor.selection;
import jetbrains.mps.nodeEditor.cells.GeometryUtil;
import jetbrains.mps.openapi.editor.EditorComponent;
import jetbrains.mps.openapi.editor.cells.CellAction;
import jetbrains.mps.openapi.editor.cells.CellActionType;
import jetbrains.mps.openapi.editor.cells.EditorCell;
import jetbrains.mps.openapi.editor.cells.EditorCell_Label;
import jetbrains.mps.openapi.editor.selection.MultipleSelection;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.model.SNode;
import java.awt.Graphics2D;
import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.List;
public abstract class AbstractMultipleSelection extends AbstractSelection implements MultipleSelection {
@NotNull
private List<EditorCell> mySelectedCells;
public AbstractMultipleSelection(@NotNull EditorComponent editorComponent) {
super(editorComponent);
}
// this method should be called from the constructor of sub-classes
protected void setSelectedCells(@NotNull List<EditorCell> selectedCells) {
mySelectedCells = selectedCells;
assert mySelectedCells.size() > 0;
}
@Override
public void activate() {
((jetbrains.mps.nodeEditor.EditorComponent) getEditorComponent()).scrollRectToVisible(GeometryUtil.getBounds(getFirstCell(), getLastCell()));
}
@Override
public void deactivate() {
}
@Override
public boolean canExecuteAction(CellActionType type) {
return getAction(type) != null;
}
@Override
public void executeAction(CellActionType type) {
((jetbrains.mps.nodeEditor.EditorComponent) getEditorComponent()).assertModelNotDisposed();
CellAction action = getAction(type);
if (action != null) {
action.execute(getEditorComponent().getEditorContext());
}
}
private CellAction getAction(CellActionType type) {
return getEditorComponent().getComponentAction(type);
}
@NotNull
@Override
public List<EditorCell> getSelectedCells() {
return mySelectedCells;
}
@NotNull
@Override
public List<SNode> getSelectedNodes() {
LinkedHashSet<SNode> result = new LinkedHashSet<>();
for (EditorCell nextCell : getSelectedCells()) {
SNode snode = nextCell.getSNode();
if (snode == null) continue;
result.add(snode);
}
return new ArrayList<>(result);
}
@NotNull
public SNode getFirstNode() {
return getFirstCell().getSNode();
}
@NotNull
public EditorCell getFirstCell() {
return getSelectedCells().get(0);
}
@NotNull
public SNode getLastNode() {
return getLastCell().getSNode();
}
@NotNull
public EditorCell getLastCell() {
return getSelectedCells().get(getSelectedCells().size() - 1);
}
@Override
public void paintSelection(Graphics2D g) {
jetbrains.mps.nodeEditor.EditorComponent.turnOnAliasingIfPossible(g);
for (EditorCell cell : getSelectedCells()) {
jetbrains.mps.nodeEditor.cells.EditorCell internalCell = (jetbrains.mps.nodeEditor.cells.EditorCell) cell;
if (!internalCell.isInClipRegion(g)) {
continue;
}
boolean wasSelected = cell.isSelected();
cell.setSelected(true);
boolean wasCaretEnabled = false;
if (cell instanceof EditorCell_Label && !wasSelected) {
EditorCell_Label label = (EditorCell_Label) cell;
wasCaretEnabled = label.isCaretEnabled();
label.setCaretEnabled(false);
}
internalCell.paint(g);
if (cell instanceof EditorCell_Label && !wasSelected) {
EditorCell_Label label = (EditorCell_Label) cell;
label.setCaretEnabled(wasCaretEnabled);
}
cell.setSelected(wasSelected);
}
}
@Override
public void ensureVisible() {
getEditorComponent().scrollToCell(getLastCell());
}
}