Home | History | Annotate | Download | only in method 
      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.text.method;
     18 
     19 import android.app.Dialog;
     20 import android.content.Context;
     21 import android.os.Bundle;
     22 import android.text.Editable;
     23 import android.text.Selection;
     24 import android.view.LayoutInflater;
     25 import android.view.View;
     26 import android.view.View.OnClickListener;
     27 import android.view.ViewGroup;
     28 import android.view.Window;
     29 import android.view.WindowManager;
     30 import android.widget.AdapterView;
     31 import android.widget.AdapterView.OnItemClickListener;
     32 import android.widget.BaseAdapter;
     33 import android.widget.Button;
     34 import android.widget.GridView;
     35 
     36 import com.android.internal.R;
     37 
     38 /**
     39  * Dialog for choosing accented characters related to a base character.
     40  */
     41 public class CharacterPickerDialog extends Dialog
     42         implements OnItemClickListener, OnClickListener {
     43     private View mView;
     44     private Editable mText;
     45     private String mOptions;
     46     private boolean mInsert;
     47     private LayoutInflater mInflater;
     48     private Button mCancelButton;
     49 
     50     /**
     51      * Creates a new CharacterPickerDialog that presents the specified
     52      * <code>options</code> for insertion or replacement (depending on
     53      * the sense of <code>insert</code>) into <code>text</code>.
     54      */
     55     public CharacterPickerDialog(Context context, View view,
     56                                  Editable text, String options,
     57                                  boolean insert) {
     58         super(context, com.android.internal.R.style.Theme_Panel);
     59 
     60         mView = view;
     61         mText = text;
     62         mOptions = options;
     63         mInsert = insert;
     64         mInflater = LayoutInflater.from(context);
     65     }
     66 
     67     @Override
     68     protected void onCreate(Bundle savedInstanceState) {
     69         super.onCreate(savedInstanceState);
     70 
     71         WindowManager.LayoutParams params = getWindow().getAttributes();
     72         params.token = mView.getApplicationWindowToken();
     73         params.type = params.TYPE_APPLICATION_ATTACHED_DIALOG;
     74         params.flags = params.flags | Window.FEATURE_NO_TITLE;
     75 
     76         setContentView(R.layout.character_picker);
     77 
     78         GridView grid = (GridView) findViewById(R.id.characterPicker);
     79         grid.setAdapter(new OptionsAdapter(getContext()));
     80         grid.setOnItemClickListener(this);
     81 
     82         mCancelButton = (Button) findViewById(R.id.cancel);
     83         mCancelButton.setOnClickListener(this);
     84     }
     85 
     86     /**
     87      * Handles clicks on the character buttons.
     88      */
     89     public void onItemClick(AdapterView parent, View view, int position, long id) {
     90         String result = String.valueOf(mOptions.charAt(position));
     91         replaceCharacterAndClose(result);
     92     }
     93 
     94     private void replaceCharacterAndClose(CharSequence replace) {
     95         int selEnd = Selection.getSelectionEnd(mText);
     96         if (mInsert || selEnd == 0) {
     97             mText.insert(selEnd, replace);
     98         } else {
     99             mText.replace(selEnd - 1, selEnd, replace);
    100         }
    101 
    102         dismiss();
    103     }
    104 
    105     /**
    106      * Handles clicks on the Cancel button.
    107      */
    108     public void onClick(View v) {
    109         if (v == mCancelButton) {
    110             dismiss();
    111         } else if (v instanceof Button) {
    112             CharSequence result = ((Button) v).getText();
    113             replaceCharacterAndClose(result);
    114         }
    115     }
    116 
    117     private class OptionsAdapter extends BaseAdapter {
    118 
    119         public OptionsAdapter(Context context) {
    120             super();
    121         }
    122 
    123         public View getView(int position, View convertView, ViewGroup parent) {
    124             Button b = (Button)
    125                 mInflater.inflate(R.layout.character_picker_button, null);
    126             b.setText(String.valueOf(mOptions.charAt(position)));
    127             b.setOnClickListener(CharacterPickerDialog.this);
    128             return b;
    129         }
    130 
    131         public final int getCount() {
    132             return mOptions.length();
    133         }
    134 
    135         public final Object getItem(int position) {
    136             return String.valueOf(mOptions.charAt(position));
    137         }
    138 
    139         public final long getItemId(int position) {
    140             return position;
    141         }
    142     }
    143 }
    144