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 com.android.internal.R;
     20 
     21 import android.app.Dialog;
     22 import android.content.Context;
     23 import android.os.Bundle;
     24 import android.text.*;
     25 import android.view.LayoutInflater;
     26 import android.view.View.OnClickListener;
     27 import android.view.View;
     28 import android.view.ViewGroup;
     29 import android.view.Window;
     30 import android.view.WindowManager;
     31 import android.widget.AdapterView.OnItemClickListener;
     32 import android.widget.AdapterView;
     33 import android.widget.BaseAdapter;
     34 import android.widget.Button;
     35 import android.widget.GridView;
     36 
     37 /**
     38  * Dialog for choosing accented characters related to a base character.
     39  */
     40 public class CharacterPickerDialog extends Dialog
     41         implements OnItemClickListener, OnClickListener {
     42     private View mView;
     43     private Editable mText;
     44     private String mOptions;
     45     private boolean mInsert;
     46     private LayoutInflater mInflater;
     47     private Button mCancelButton;
     48 
     49     /**
     50      * Creates a new CharacterPickerDialog that presents the specified
     51      * <code>options</code> for insertion or replacement (depending on
     52      * the sense of <code>insert</code>) into <code>text</code>.
     53      */
     54     public CharacterPickerDialog(Context context, View view,
     55                                  Editable text, String options,
     56                                  boolean insert) {
     57         super(context, com.android.internal.R.style.Theme_Panel);
     58 
     59         mView = view;
     60         mText = text;
     61         mOptions = options;
     62         mInsert = insert;
     63         mInflater = LayoutInflater.from(context);
     64     }
     65 
     66     @Override
     67     protected void onCreate(Bundle savedInstanceState) {
     68         super.onCreate(savedInstanceState);
     69 
     70         WindowManager.LayoutParams params = getWindow().getAttributes();
     71         params.token = mView.getApplicationWindowToken();
     72         params.type = params.TYPE_APPLICATION_ATTACHED_DIALOG;
     73         params.flags = params.flags | Window.FEATURE_NO_TITLE;
     74 
     75         setContentView(R.layout.character_picker);
     76 
     77         GridView grid = (GridView) findViewById(R.id.characterPicker);
     78         grid.setAdapter(new OptionsAdapter(getContext()));
     79         grid.setOnItemClickListener(this);
     80 
     81         mCancelButton = (Button) findViewById(R.id.cancel);
     82         mCancelButton.setOnClickListener(this);
     83     }
     84 
     85     /**
     86      * Handles clicks on the character buttons.
     87      */
     88     public void onItemClick(AdapterView parent, View view, int position, long id) {
     89         String result = String.valueOf(mOptions.charAt(position));
     90         replaceCharacterAndClose(result);
     91     }
     92 
     93     private void replaceCharacterAndClose(CharSequence replace) {
     94         int selEnd = Selection.getSelectionEnd(mText);
     95         if (mInsert || selEnd == 0) {
     96             mText.insert(selEnd, replace);
     97         } else {
     98             mText.replace(selEnd - 1, selEnd, replace);
     99         }
    100 
    101         dismiss();
    102     }
    103 
    104     /**
    105      * Handles clicks on the Cancel button.
    106      */
    107     public void onClick(View v) {
    108         if (v == mCancelButton) {
    109             dismiss();
    110         } else if (v instanceof Button) {
    111             CharSequence result = ((Button) v).getText();
    112             replaceCharacterAndClose(result);
    113         }
    114     }
    115 
    116     private class OptionsAdapter extends BaseAdapter {
    117 
    118         public OptionsAdapter(Context context) {
    119             super();
    120         }
    121 
    122         public View getView(int position, View convertView, ViewGroup parent) {
    123             Button b = (Button)
    124                 mInflater.inflate(R.layout.character_picker_button, null);
    125             b.setText(String.valueOf(mOptions.charAt(position)));
    126             b.setOnClickListener(CharacterPickerDialog.this);
    127             return b;
    128         }
    129 
    130         public final int getCount() {
    131             return mOptions.length();
    132         }
    133 
    134         public final Object getItem(int position) {
    135             return String.valueOf(mOptions.charAt(position));
    136         }
    137 
    138         public final long getItemId(int position) {
    139             return position;
    140         }
    141     }
    142 }
    143