xml/impl/src/com/intellij/codeInsight/template/emmet/EmmetPreviewTypedHandler.java

/*
 * 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.codeInsight.template.emmet;

import com.intellij.application.options.emmet.EmmetOptions;
import com.intellij.codeInsight.editorActions.TypedHandlerDelegate;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.ex.EditorEx;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NotNull;

public class EmmetPreviewTypedHandler extends TypedHandlerDelegate {
  @Override
  public Result charTyped(char c, @NotNull final Project project, @NotNull final Editor editor, @NotNull final PsiFile file) {
    if (EmmetOptions.getInstance().isPreviewEnabled()) {
      EmmetPreviewHint existingBalloon = EmmetPreviewHint.getExistingHint(editor);
      if (existingBalloon == null) {
        String templateText = EmmetPreviewUtil.calculateTemplateText(editor, file, false);
        if (StringUtil.isNotEmpty(templateText)) {
          EmmetPreviewHint.createHint((EditorEx)editor, templateText, file.getFileType()).showHint();
          EmmetPreviewUtil.addEmmetPreviewListeners(editor, file, false);
        }
      }
    }

    return super.charTyped(c, project, editor, file);
  }
}