EditorActionModeCallback.java

/***
  Copyright (c) 2012-2014 CommonsWare, LLC
  
  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.commonsware.cwac.richedit;

import android.app.Activity;
import android.view.ActionMode;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import com.commonsware.cwac.richtextutils.Selection;
import java.util.HashMap;

public class EditorActionModeCallback {
  protected int menuResource=0;
  protected RichEditText editor=null;
  protected Selection selection=null;
  protected EditorActionModeListener listener=null;
  protected HashMap<Integer, EditorActionModeCallback> chains=
      new HashMap<Integer, EditorActionModeCallback>();
  protected int itemToHide=0;

  EditorActionModeCallback(int menuResource, RichEditText editor,
                           EditorActionModeListener listener) {
    this.menuResource=menuResource;
    this.editor=editor;
    this.listener=listener;
  }

  void setSelection(Selection selection) {
    this.selection=selection;
  }

  void addChain(int menuItemId, EditorActionModeCallback toChainTo) {
    chains.put(menuItemId, toChainTo);
  }

  void hideItem(int menuItemId) {
    itemToHide=menuItemId;
  }

  public static class Native extends EditorActionModeCallback implements
      ActionMode.Callback {
    Activity host=null;

    public Native(Activity host, int menuResource, RichEditText editor,
                  EditorActionModeListener listener) {
      super(menuResource, editor, listener);
      this.host=host;
    }

    @Override
    public boolean onCreateActionMode(ActionMode mode, Menu menu) {
      MenuInflater inflater=mode.getMenuInflater();

      MenuItem item=menu.findItem(android.R.id.selectAll);

      if (item != null) {
        item.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM
            | MenuItem.SHOW_AS_ACTION_WITH_TEXT);
      }

      inflater.inflate(menuResource, menu);

      if (itemToHide!=0) {
        menu.findItem(itemToHide).setVisible(false);
      }

      listener.setIsShowing(true);

      return(true);
    }

    @Override
    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
      if (selection != null) {
        selection.apply(editor);
      }

      return(false);
    }

    @Override
    public void onDestroyActionMode(ActionMode mode) {
      listener.setIsShowing(false);
    }

    @Override
    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
      EditorActionModeCallback next=chains.get(item.getItemId());

      if (next != null) {
        next.setSelection(new Selection(editor));
        editor.setCurrentActionMode(host.startActionMode((EditorActionModeCallback.Native)next));
        mode.finish();

        return(true);
      }
      //
      // mode.finish();
      //
      return(listener.doAction(item.getItemId()));
    }
  }
}