platform/platform-api/src/com/intellij/ui/speedSearch/SpeedSearchSupply.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.ui.speedSearch;

import com.intellij.openapi.actionSystem.DataKey;
import com.intellij.openapi.util.Key;
import com.intellij.openapi.util.TextRange;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

/**
 * @author spLeaner
 * @author Konstantin Bulenkov
 */
public abstract class SpeedSearchSupply {
  /**
   * Client property key to use in jcomponents for passing the actual search query to renderers
   */
  public static final String SEARCH_QUERY_KEY = "SEARCH_QUERY";
  private static final Key SPEED_SEARCH_COMPONENT_MARKER = new Key("SPEED_SEARCH_COMPONENT_MARKER");
  public static final DataKey<String> SPEED_SEARCH_CURRENT_QUERY = DataKey.create("SPEED_SEARCH_CURRENT_QUERY");

  @Nullable
  public static SpeedSearchSupply getSupply(@NotNull final JComponent component) {
    return getSupply(component, false);
  }
  
  @Nullable
  public static SpeedSearchSupply getSupply(@NotNull final JComponent component, boolean evenIfInactive) {
    SpeedSearchSupply speedSearch = (SpeedSearchSupply)component.getClientProperty(SPEED_SEARCH_COMPONENT_MARKER);

    if (evenIfInactive) {
      return speedSearch;
    }

    return speedSearch != null && speedSearch.isPopupActive() ? speedSearch : null;
  }  

  @Nullable
  public abstract Iterable<TextRange> matchingFragments(@NotNull final String text);

  /**
   * Selects element according to search criteria changes
   */
  public abstract void refreshSelection();

  public abstract boolean isPopupActive();

  @Nullable
  public String getEnteredPrefix() {
    return null;
  }

  protected void installSupplyTo(final JComponent component) {
    component.putClientProperty(SPEED_SEARCH_COMPONENT_MARKER, this);
    addChangeListener(new PropertyChangeListener() {
      @Override
      public void propertyChange(PropertyChangeEvent evt) {
        component.repaint();
      }
    });
  }

  public abstract void addChangeListener(@NotNull PropertyChangeListener listener);
  public abstract void removeChangeListener(@NotNull PropertyChangeListener listener);
}