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/*
* Copyright 2000-2014 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 com.intellij.util;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.command.CommandProcessor;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.ex.DocumentEx;
import org.jetbrains.annotations.NotNull;
/**
* Is intended to hold utility methods to use during {@link Document} processing.
*/
public final class DocumentUtil {
private DocumentUtil() {
}
/**
* Ensures that given task is executed when given document is at the given 'in bulk' mode.
*
* @param document target document
* @param executeInBulk <code>true</code> to force given document to be in bulk mode when given task is executed;
* <code>false</code> to force given document to be <b>not</b> in bulk mode when given task is executed
* @param task task to execute
*/
public static void executeInBulk(@NotNull Document document, final boolean executeInBulk, @NotNull Runnable task) {
if (!(document instanceof DocumentEx)) {
task.run();
return;
}
DocumentEx documentEx = (DocumentEx)document;
if (executeInBulk == documentEx.isInBulkUpdate()) {
task.run();
return;
}
documentEx.setInBulkUpdate(executeInBulk);
try {
task.run();
}
finally {
documentEx.setInBulkUpdate(!executeInBulk);
}
}
public static void writeInRunUndoTransparentAction(@NotNull final Runnable runnable) {
CommandProcessor.getInstance().runUndoTransparentAction(new Runnable() {
@Override
public void run() {
ApplicationManager.getApplication().runWriteAction(runnable);
}
});
}
public static int getFirstNonSpaceCharOffset(@NotNull Document document, int line) {
int startOffset = document.getLineStartOffset(line);
int endOffset = document.getLineEndOffset(line);
return getFirstNonSpaceCharOffset(document, startOffset, endOffset);
}
public static int getFirstNonSpaceCharOffset(@NotNull Document document, int startOffset, int endOffset) {
CharSequence text = document.getImmutableCharSequence();
for (int i = startOffset; i < endOffset; i++) {
char c = text.charAt(i);
if (c != ' ' && c != '\t') {
return i;
}
}
return startOffset;
}
}
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