| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * 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 android.webkit; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.graphics.Point; |
| import android.graphics.Rect; |
| import android.text.Editable; |
| import android.text.Selection; |
| import android.text.Spannable; |
| import android.text.TextWatcher; |
| import android.view.ActionMode; |
| import android.view.LayoutInflater; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.View; |
| import android.view.inputmethod.InputMethodManager; |
| import android.widget.EditText; |
| import android.widget.TextView; |
| |
| class FindActionModeCallback implements ActionMode.Callback, TextWatcher, |
| View.OnLongClickListener, View.OnClickListener { |
| private View mCustomView; |
| private EditText mEditText; |
| private TextView mMatches; |
| private WebViewClassic mWebView; |
| private InputMethodManager mInput; |
| private Resources mResources; |
| private boolean mMatchesFound; |
| private int mNumberOfMatches; |
| private int mActiveMatchIndex; |
| private ActionMode mActionMode; |
| private String mLastFind; |
| |
| FindActionModeCallback(Context context) { |
| mCustomView = LayoutInflater.from(context).inflate( |
| com.android.internal.R.layout.webview_find, null); |
| mEditText = (EditText) mCustomView.findViewById( |
| com.android.internal.R.id.edit); |
| // Override long click so that select ActionMode is not opened, which |
| // would exit find ActionMode. |
| mEditText.setOnLongClickListener(this); |
| mEditText.setOnClickListener(this); |
| setText(""); |
| mMatches = (TextView) mCustomView.findViewById( |
| com.android.internal.R.id.matches); |
| mInput = (InputMethodManager) |
| context.getSystemService(Context.INPUT_METHOD_SERVICE); |
| mResources = context.getResources(); |
| } |
| |
| void finish() { |
| mActionMode.finish(); |
| } |
| |
| /* |
| * Place text in the text field so it can be searched for. Need to press |
| * the find next or find previous button to find all of the matches. |
| */ |
| void setText(String text) { |
| mEditText.setText(text); |
| Spannable span = (Spannable) mEditText.getText(); |
| int length = span.length(); |
| // Ideally, we would like to set the selection to the whole field, |
| // but this brings up the Text selection CAB, which dismisses this |
| // one. |
| Selection.setSelection(span, length, length); |
| // Necessary each time we set the text, so that this will watch |
| // changes to it. |
| span.setSpan(this, 0, length, Spannable.SPAN_INCLUSIVE_INCLUSIVE); |
| mMatchesFound = false; |
| } |
| |
| /* |
| * Set the WebView to search. Must be non null, and set before calling |
| * startActionMode. |
| */ |
| void setWebView(WebViewClassic webView) { |
| if (null == webView) { |
| throw new AssertionError("WebView supplied to " |
| + "FindActionModeCallback cannot be null"); |
| } |
| mWebView = webView; |
| } |
| |
| /* |
| * Move the highlight to the next match. |
| * @param next If true, find the next match further down in the document. |
| * If false, find the previous match, up in the document. |
| */ |
| private void findNext(boolean next) { |
| if (mWebView == null) { |
| throw new AssertionError( |
| "No WebView for FindActionModeCallback::findNext"); |
| } |
| if (!mMatchesFound) { |
| findAll(); |
| return; |
| } |
| if (0 == mNumberOfMatches) { |
| // There are no matches, so moving to the next match will not do |
| // anything. |
| return; |
| } |
| mWebView.findNext(next); |
| updateMatchesString(); |
| } |
| |
| /* |
| * Highlight all the instances of the string from mEditText in mWebView. |
| */ |
| void findAll() { |
| if (mWebView == null) { |
| throw new AssertionError( |
| "No WebView for FindActionModeCallback::findAll"); |
| } |
| CharSequence find = mEditText.getText(); |
| if (0 == find.length()) { |
| mWebView.clearMatches(); |
| mMatches.setVisibility(View.GONE); |
| mMatchesFound = false; |
| mLastFind = null; |
| } else { |
| mMatchesFound = true; |
| mMatches.setVisibility(View.INVISIBLE); |
| mNumberOfMatches = 0; |
| mLastFind = find.toString(); |
| mWebView.findAllAsync(mLastFind); |
| } |
| } |
| |
| public void showSoftInput() { |
| mInput.startGettingWindowFocus(mEditText.getRootView()); |
| mInput.focusIn(mEditText); |
| mInput.showSoftInput(mEditText, 0); |
| } |
| |
| public void updateMatchCount(int matchIndex, int matchCount, |
| String findText) { |
| if (mLastFind != null && mLastFind.equals(findText)) { |
| mNumberOfMatches = matchCount; |
| mActiveMatchIndex = matchIndex; |
| updateMatchesString(); |
| } else { |
| mMatches.setVisibility(View.INVISIBLE); |
| mNumberOfMatches = 0; |
| } |
| } |
| |
| /* |
| * Update the string which tells the user how many matches were found, and |
| * which match is currently highlighted. |
| */ |
| private void updateMatchesString() { |
| if (mNumberOfMatches == 0) { |
| mMatches.setText(com.android.internal.R.string.no_matches); |
| } else { |
| mMatches.setText(mResources.getQuantityString( |
| com.android.internal.R.plurals.matches_found, mNumberOfMatches, |
| mActiveMatchIndex + 1, mNumberOfMatches)); |
| } |
| mMatches.setVisibility(View.VISIBLE); |
| } |
| |
| // OnLongClickListener implementation |
| |
| @Override |
| public boolean onLongClick(View v) { return true; } |
| |
| // OnClickListener implementation |
| |
| @Override |
| public void onClick(View v) { |
| findNext(true); |
| } |
| |
| // ActionMode.Callback implementation |
| |
| @Override |
| public boolean onCreateActionMode(ActionMode mode, Menu menu) { |
| if (!mode.isUiFocusable()) { |
| // If the action mode we're running in is not focusable the user |
| // will not be able to type into the find on page field. This |
| // should only come up when we're running in a dialog which is |
| // already less than ideal; disable the option for now. |
| return false; |
| } |
| |
| mode.setCustomView(mCustomView); |
| mode.getMenuInflater().inflate(com.android.internal.R.menu.webview_find, |
| menu); |
| mActionMode = mode; |
| Editable edit = mEditText.getText(); |
| Selection.setSelection(edit, edit.length()); |
| mMatches.setVisibility(View.GONE); |
| mMatchesFound = false; |
| mMatches.setText("0"); |
| mEditText.requestFocus(); |
| return true; |
| } |
| |
| @Override |
| public void onDestroyActionMode(ActionMode mode) { |
| mActionMode = null; |
| mWebView.notifyFindDialogDismissed(); |
| mInput.hideSoftInputFromWindow(mWebView.getWebView().getWindowToken(), 0); |
| } |
| |
| @Override |
| public boolean onPrepareActionMode(ActionMode mode, Menu menu) { |
| return false; |
| } |
| |
| @Override |
| public boolean onActionItemClicked(ActionMode mode, MenuItem item) { |
| if (mWebView == null) { |
| throw new AssertionError( |
| "No WebView for FindActionModeCallback::onActionItemClicked"); |
| } |
| mInput.hideSoftInputFromWindow(mWebView.getWebView().getWindowToken(), 0); |
| switch(item.getItemId()) { |
| case com.android.internal.R.id.find_prev: |
| findNext(false); |
| break; |
| case com.android.internal.R.id.find_next: |
| findNext(true); |
| break; |
| default: |
| return false; |
| } |
| return true; |
| } |
| |
| // TextWatcher implementation |
| |
| @Override |
| public void beforeTextChanged(CharSequence s, |
| int start, |
| int count, |
| int after) { |
| // Does nothing. Needed to implement TextWatcher. |
| } |
| |
| @Override |
| public void onTextChanged(CharSequence s, |
| int start, |
| int before, |
| int count) { |
| findAll(); |
| } |
| |
| @Override |
| public void afterTextChanged(Editable s) { |
| // Does nothing. Needed to implement TextWatcher. |
| } |
| |
| private Rect mGlobalVisibleRect = new Rect(); |
| private Point mGlobalVisibleOffset = new Point(); |
| public int getActionModeGlobalBottom() { |
| if (mActionMode == null) { |
| return 0; |
| } |
| View view = (View) mCustomView.getParent(); |
| if (view == null) { |
| view = mCustomView; |
| } |
| view.getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); |
| return mGlobalVisibleRect.bottom; |
| } |
| |
| } |