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/*
* Copyright 2000-2011 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.
*/
/*
* Created by IntelliJ IDEA.
* User: max
* Date: Apr 22, 2002
* Time: 5:51:22 PM
* To change template for new class use
* Code Style | Class Templates options (Tools | IDE Options).
*/
package com.intellij.openapi.editor.impl;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.FoldRegion;
import com.intellij.openapi.editor.FoldingGroup;
import com.intellij.openapi.editor.ex.DocumentEx;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class FoldRegionImpl extends RangeMarkerImpl implements FoldRegion {
private boolean myIsExpanded;
private final Editor myEditor;
private final String myPlaceholderText;
private final FoldingGroup myGroup;
private final boolean myShouldNeverExpand;
FoldRegionImpl(@NotNull Editor editor,
int startOffset,
int endOffset,
@NotNull String placeholder,
@Nullable FoldingGroup group,
boolean shouldNeverExpand) {
super((DocumentEx)editor.getDocument(), startOffset, endOffset,true);
myGroup = group;
myShouldNeverExpand = shouldNeverExpand;
myIsExpanded = true;
myEditor = editor;
myPlaceholderText = placeholder;
}
@Override
public boolean isExpanded() {
return myIsExpanded;
}
@Override
public void setExpanded(boolean expanded) {
FoldingModelImpl foldingModel = (FoldingModelImpl)myEditor.getFoldingModel();
if (myGroup == null) {
doSetExpanded(expanded, foldingModel, this);
} else {
for (final FoldRegion region : foldingModel.getGroupedRegions(myGroup)) {
doSetExpanded(expanded, foldingModel, region);
// There is a possible case that we can't change expanded status of particular fold region (e.g. we can't collapse
// if it contains caret). So, we revert all changes for the fold regions from the same group then.
if (region.isExpanded() != expanded) {
for (FoldRegion regionToRevert : foldingModel.getGroupedRegions(myGroup)) {
if (regionToRevert == region) {
break;
}
doSetExpanded(!expanded, foldingModel, regionToRevert);
}
return;
}
}
}
}
private static void doSetExpanded(boolean expanded, FoldingModelImpl foldingModel, FoldRegion region) {
if (expanded) {
foldingModel.expandFoldRegion(region);
}
else{
foldingModel.collapseFoldRegion(region);
}
}
@Override
public boolean isValid() {
return super.isValid() && intervalStart() < intervalEnd();
}
public void setExpandedInternal(boolean toExpand) {
myIsExpanded = toExpand;
}
@Override
@NotNull
public String getPlaceholderText() {
return myPlaceholderText;
}
@Override
public Editor getEditor() {
return myEditor;
}
@Override
@Nullable
public FoldingGroup getGroup() {
return myGroup;
}
@Override
public boolean shouldNeverExpand() {
return myShouldNeverExpand;
}
public String toString() {
return "FoldRegion " + (myIsExpanded ? "-" : "+") + "(" + getStartOffset() + ":" + getEndOffset() + ")"
+ (isValid() ? "" : "(invalid)") + ", placeholder='" + myPlaceholderText + "'";
}
}
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