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      1 /*
      2  * Copyright (C) 2010 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.webkit;
     18 
     19 import android.app.Activity;
     20 import android.app.SearchManager;
     21 import android.content.ClipboardManager;
     22 import android.content.Context;
     23 import android.content.Intent;
     24 import android.provider.Browser;
     25 import android.view.ActionMode;
     26 import android.view.Menu;
     27 import android.view.MenuItem;
     28 
     29 class SelectActionModeCallback implements ActionMode.Callback {
     30     private WebViewClassic mWebView;
     31     private ActionMode mActionMode;
     32     private boolean mIsTextSelected = true;
     33 
     34     void setWebView(WebViewClassic webView) {
     35         mWebView = webView;
     36     }
     37 
     38     void setTextSelected(boolean isTextSelected) {
     39         mIsTextSelected = isTextSelected;
     40     }
     41 
     42     void finish() {
     43         // It is possible that onCreateActionMode was never called, in the case
     44         // where there is no ActionBar, for example.
     45         if (mActionMode != null) {
     46             mActionMode.finish();
     47         }
     48     }
     49 
     50     // ActionMode.Callback implementation
     51 
     52     @Override
     53     public boolean onCreateActionMode(ActionMode mode, Menu menu) {
     54         mode.getMenuInflater().inflate(com.android.internal.R.menu.webview_copy, menu);
     55 
     56         final Context context = mWebView.getContext();
     57         mode.setTitle(context.getString(com.android.internal.R.string.textSelectionCABTitle));
     58         mode.setTitleOptionalHint(true);
     59 
     60         // If the action mode UI we're running in isn't capable of taking window focus
     61         // the user won't be able to type into the find on page UI. Disable this functionality.
     62         // (Note that this should only happen in floating dialog windows.)
     63         // This can be removed once we can handle multiple focusable windows at a time
     64         // in a better way.
     65         ClipboardManager cm = (ClipboardManager)(context
     66                 .getSystemService(Context.CLIPBOARD_SERVICE));
     67         boolean isFocusable = mode.isUiFocusable();
     68         boolean isEditable = mWebView.focusCandidateIsEditableText();
     69         boolean canPaste = isEditable && cm.hasPrimaryClip() && isFocusable;
     70         boolean canFind = !isEditable && isFocusable;
     71         boolean canCut = isEditable && mIsTextSelected && isFocusable;
     72         boolean canCopy = mIsTextSelected;
     73         boolean canWebSearch = mIsTextSelected;
     74         setMenuVisibility(menu, canFind, com.android.internal.R.id.find);
     75         setMenuVisibility(menu, canPaste, com.android.internal.R.id.paste);
     76         setMenuVisibility(menu, canCut, com.android.internal.R.id.cut);
     77         setMenuVisibility(menu, canCopy, com.android.internal.R.id.copy);
     78         setMenuVisibility(menu, canWebSearch, com.android.internal.R.id.websearch);
     79         mActionMode = mode;
     80         return true;
     81     }
     82 
     83     @Override
     84     public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
     85         return true;
     86     }
     87 
     88     @Override
     89     public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
     90         switch(item.getItemId()) {
     91             case android.R.id.cut:
     92                 mWebView.cutSelection();
     93                 mode.finish();
     94                 break;
     95 
     96             case android.R.id.copy:
     97                 mWebView.copySelection();
     98                 mode.finish();
     99                 break;
    100 
    101             case android.R.id.paste:
    102                 mWebView.pasteFromClipboard();
    103                 mode.finish();
    104                 break;
    105 
    106             case com.android.internal.R.id.share:
    107                 String selection = mWebView.getSelection();
    108                 Browser.sendString(mWebView.getContext(), selection);
    109                 mode.finish();
    110                 break;
    111 
    112             case com.android.internal.R.id.select_all:
    113                 mWebView.selectAll();
    114                 break;
    115 
    116             case com.android.internal.R.id.find:
    117                 String sel= mWebView.getSelection();
    118                 mode.finish();
    119                 mWebView.showFindDialog(sel, false);
    120                 break;
    121             case com.android.internal.R.id.websearch:
    122                 mode.finish();
    123                 Intent i = new Intent(Intent.ACTION_WEB_SEARCH);
    124                 i.putExtra(SearchManager.EXTRA_NEW_SEARCH, true);
    125                 i.putExtra(SearchManager.QUERY, mWebView.getSelection());
    126                 if (!(mWebView.getContext() instanceof Activity)) {
    127                     i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    128                 }
    129                 mWebView.getContext().startActivity(i);
    130                 break;
    131 
    132             default:
    133                 return false;
    134         }
    135         return true;
    136     }
    137 
    138     @Override
    139     public void onDestroyActionMode(ActionMode mode) {
    140         mWebView.selectionDone();
    141     }
    142 
    143     private void setMenuVisibility(Menu menu, boolean visible, int resourceId) {
    144         final MenuItem item = menu.findItem(resourceId);
    145         if (item != null) {
    146             item.setVisible(visible);
    147         }
    148     }
    149 }
    150