org.wisepersist.gwt.ace.client.AceDefaultCommandLine Maven / Gradle / Ivy

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GWT Wrapper for ACE editor.
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/*
 * Copyright 2014-2016 Wise Persist Pty Ltd.
 *
 * 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 org.wisepersist.gwt.ace.client;

import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyDownEvent;
import com.google.gwt.event.dom.client.KeyDownHandler;
import com.google.gwt.user.client.ui.ValueBoxBase;

/**
 * Default implementation of AceCommandLine wrapping any GWT value box
 * like TextBox or TextArea.
 */
public class AceDefaultCommandLine implements AceCommandLine {

  private ValueBoxBase textBox;

  /**
   * Create command line wrapper around GWT text box.
   *
   * @param textBox any GWT value box like TextBox or TextArea
   */
  public AceDefaultCommandLine(ValueBoxBase textBox) {
    this.textBox = textBox;
  }

  /**
   * Set listener getting callback from command line component.
   * Typically editor registers listener itself.
   *
   * @param listener listener for command entering event
   */
  @Override
  public void setCommandLineListener(final AceCommandLineListener listener) {
    textBox.addKeyDownHandler(new KeyDownHandler() {
      @Override
      public void onKeyDown(KeyDownEvent event) {
        if (event.getNativeKeyCode() == KeyCodes.KEY_ENTER) {
          event.preventDefault();
          listener.onCommandEntered(textBox.getValue());
        }
      }
    });
  }

  /**
   * Give current text which command line contains.
   *
   * @return command stored in command line
   */
  @Override
  public String getValue() {
    return textBox.getValue();
  }

  /**
   * Set text into command line. It could be for instance a result of
   * command execution.
   *
   * @param value text to be placed into command line
   */
  @Override
  public void setValue(String value) {
    textBox.setValue(value);
  }
}