platform/lang-impl/src/com/intellij/application/options/codeStyle/arrangement/action/AbstractArrangementRuleAction.java


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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.application.options.codeStyle.arrangement.action;

import com.intellij.application.options.codeStyle.arrangement.match.ArrangementMatchingRulesControl;
import com.intellij.openapi.actionSystem.AnAction;
import org.jetbrains.annotations.NotNull;

import java.awt.*;

/**
 * @author Svetlana.Zemlyanskaya
 */
public abstract class AbstractArrangementRuleAction extends AnAction {

  protected void scrollRowToVisible(@NotNull ArrangementMatchingRulesControl control, int row) {
    final Rectangle rect = control.getCellRect(row, 0, false);
    if (row != control.getEditingRow() - 1) {
      control.scrollRectToVisible(rect);
    }
    else {
      final Rectangle editorRect = control.getCellRect(row + 1, 0, false);
      if(!rect.isEmpty() && !editorRect.isEmpty()) {
        final int height = (int)(rect.getHeight() + editorRect.getHeight());
        final Rectangle visibleRect = new Rectangle((int)rect.getX(), (int)rect.getY(), (int)rect.getWidth(), height);
        control.scrollRectToVisible(visibleRect);
      }
    }
  }
}