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      1 /*
      2  * Copyright (C) 2007-2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
      5  * use this file except in compliance with the License. You may obtain a copy of
      6  * 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, WITHOUT
     12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
     13  * License for the specific language governing permissions and limitations under
     14  * the License.
     15  */
     16 
     17 package com.android.internal.widget;
     18 
     19 import android.os.Bundle;
     20 import android.text.Editable;
     21 import android.text.method.KeyListener;
     22 import android.util.Log;
     23 import android.view.inputmethod.BaseInputConnection;
     24 import android.view.inputmethod.CompletionInfo;
     25 import android.view.inputmethod.ExtractedText;
     26 import android.view.inputmethod.ExtractedTextRequest;
     27 import android.widget.TextView;
     28 
     29 public class EditableInputConnection extends BaseInputConnection {
     30     private static final boolean DEBUG = false;
     31     private static final String TAG = "EditableInputConnection";
     32 
     33     private final TextView mTextView;
     34 
     35     public EditableInputConnection(TextView textview) {
     36         super(textview, true);
     37         mTextView = textview;
     38     }
     39 
     40     public Editable getEditable() {
     41         TextView tv = mTextView;
     42         if (tv != null) {
     43             return tv.getEditableText();
     44         }
     45         return null;
     46     }
     47 
     48     public boolean beginBatchEdit() {
     49         mTextView.beginBatchEdit();
     50         return true;
     51     }
     52 
     53     public boolean endBatchEdit() {
     54         mTextView.endBatchEdit();
     55         return true;
     56     }
     57 
     58     public boolean clearMetaKeyStates(int states) {
     59         final Editable content = getEditable();
     60         if (content == null) return false;
     61         KeyListener kl = mTextView.getKeyListener();
     62         if (kl != null) {
     63             try {
     64                 kl.clearMetaKeyState(mTextView, content, states);
     65             } catch (AbstractMethodError e) {
     66                 // This is an old listener that doesn't implement the
     67                 // new method.
     68             }
     69         }
     70         return true;
     71     }
     72 
     73     public boolean commitCompletion(CompletionInfo text) {
     74         if (DEBUG) Log.v(TAG, "commitCompletion " + text);
     75         mTextView.beginBatchEdit();
     76         mTextView.onCommitCompletion(text);
     77         mTextView.endBatchEdit();
     78         return true;
     79     }
     80 
     81     public boolean performEditorAction(int actionCode) {
     82         if (DEBUG) Log.v(TAG, "performEditorAction " + actionCode);
     83         mTextView.onEditorAction(actionCode);
     84         return true;
     85     }
     86 
     87     public boolean performContextMenuAction(int id) {
     88         if (DEBUG) Log.v(TAG, "performContextMenuAction " + id);
     89         mTextView.beginBatchEdit();
     90         mTextView.onTextContextMenuItem(id);
     91         mTextView.endBatchEdit();
     92         return true;
     93     }
     94 
     95     public ExtractedText getExtractedText(ExtractedTextRequest request, int flags) {
     96         if (mTextView != null) {
     97             ExtractedText et = new ExtractedText();
     98             if (mTextView.extractText(request, et)) {
     99                 if ((flags&GET_EXTRACTED_TEXT_MONITOR) != 0) {
    100                     mTextView.setExtracting(request);
    101                 }
    102                 return et;
    103             }
    104         }
    105         return null;
    106     }
    107 
    108     public boolean performPrivateCommand(String action, Bundle data) {
    109         mTextView.onPrivateIMECommand(action, data);
    110         return true;
    111     }
    112 
    113     @Override
    114     public boolean commitText(CharSequence text, int newCursorPosition) {
    115         if (mTextView == null) {
    116             return super.commitText(text, newCursorPosition);
    117         }
    118 
    119         CharSequence errorBefore = mTextView.getError();
    120         boolean success = super.commitText(text, newCursorPosition);
    121         CharSequence errorAfter = mTextView.getError();
    122 
    123         if (errorAfter != null && errorBefore == errorAfter) {
    124             mTextView.setError(null, null);
    125         }
    126 
    127         return success;
    128     }
    129 }
    130