platform/platform-api/src/com/intellij/openapi/actionSystem/KeyboardModifierGestureShortcut.java

/*
 * Copyright 2000-2009 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.openapi.actionSystem;

import com.intellij.openapi.keymap.KeymapUtil;

import javax.swing.*;

public class KeyboardModifierGestureShortcut extends Shortcut {

  private final KeyStroke myStroke;
  private final KeyboardGestureAction.ModifierType myType;

  public static Shortcut newInstance(KeyboardGestureAction.ModifierType type, KeyStroke stroke) {
    switch (type) {
      case dblClick:
        return new DblClick(stroke);
      case hold:
        return new Hold(stroke);
    }

    throw new IllegalArgumentException(type.toString());
  }

  protected KeyboardModifierGestureShortcut(final KeyStroke stroke, KeyboardGestureAction.ModifierType type) {
    myStroke = stroke;
    myType = type;
  }

  public KeyStroke getStroke() {
    return myStroke;
  }

  public KeyboardGestureAction.ModifierType getType() {
    return myType;
  }

  @Override
  public boolean isKeyboard() {
    return true;
  }

  @Override
  public boolean startsWith(final Shortcut sc) {
    if (!(sc instanceof KeyboardModifierGestureShortcut)) return false;

    final KeyboardModifierGestureShortcut other = (KeyboardModifierGestureShortcut)sc;
    if (myType.equals(other.myType)) {
      if (myStroke.getModifiers() != other.myStroke.getModifiers()) return false;
      return other.myStroke.getKeyCode() != -1 || other.myStroke.getKeyCode() == myStroke.getKeyCode();
    }

    return false;
  }

  @Override
  public boolean equals(final Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;

    final KeyboardModifierGestureShortcut that = (KeyboardModifierGestureShortcut)o;

    if (myStroke != null ? !myStroke.equals(that.myStroke) : that.myStroke != null) return false;
    if (myType != that.myType) return false;

    return true;
  }

  @Override
  public int hashCode() {
    int result;
    result = (myStroke != null ? myStroke.hashCode() : 0);
    result = 31 * result + (myType != null ? myType.hashCode() : 0);
    return result;
  }

  public static class DblClick extends KeyboardModifierGestureShortcut {
    public DblClick(final KeyStroke stroke) {
      super(stroke, KeyboardGestureAction.ModifierType.dblClick);
    }
  }

  public static class Hold extends KeyboardModifierGestureShortcut {
    public Hold(final KeyStroke stroke) {
      super(stroke, KeyboardGestureAction.ModifierType.hold);
    }
  }

  @Override
  public String toString() {
    String s = getType() == KeyboardGestureAction.ModifierType.dblClick ? "Press, release and hold " : "Hold ";
    s += KeymapUtil.getKeystrokeText(this.getStroke());
    return s;
  }
}