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/*
* Copyright (C) 2007 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 com.android.browser;
import android.os.Handler;
import android.os.Message;
import android.text.Editable;
import android.text.Spannable;
import android.text.TextWatcher;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.LayoutInflater;
import android.webkit.WebView;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
/* package */ class FindDialog extends LinearLayout implements TextWatcher {
private WebView mWebView;
private TextView mMatches;
private BrowserActivity mBrowserActivity;
// Views with which the user can interact.
private View mOk;
private EditText mEditText;
private View mNextButton;
private View mPrevButton;
// Tags for messages to be sent to the handler.
private final static int FIND_RESPONSE = 0;
private final static int NUM_FOUND = 1;
private View.OnClickListener mFindListener = new View.OnClickListener() {
public void onClick(View v) {
findNext();
}
};
private View.OnClickListener mFindCancelListener =
new View.OnClickListener() {
public void onClick(View v) {
dismiss();
}
};
private View.OnClickListener mFindPreviousListener =
new View.OnClickListener() {
public void onClick(View v) {
if (mWebView == null) {
throw new AssertionError("No WebView for FindDialog::onClick");
}
// Find is disabled for version 1.0, so find methods on WebView are
// currently private.
//mWebView.findPrevious(mEditText.getText().toString(),
// mFindHandler.obtainMessage(FIND_RESPONSE));
}
};
private Handler mFindHandler = new Handler() {
public void handleMessage(Message msg) {
if (NUM_FOUND == msg.what) {
mMatches.setText(Integer.toString(msg.arg1));
if (0 == msg.arg1) {
disableButtons();
} else {
mPrevButton.setFocusable(true);
mNextButton.setFocusable(true);
mPrevButton.setEnabled(true);
mNextButton.setEnabled(true);
}
}
}
};
private void disableButtons() {
mPrevButton.setEnabled(false);
mNextButton.setEnabled(false);
mPrevButton.setFocusable(false);
mNextButton.setFocusable(false);
}
public void setWebView(WebView webview) {
mWebView = webview;
}
/* package */ FindDialog(BrowserActivity context) {
super(context);
mBrowserActivity = context;
LayoutInflater factory = LayoutInflater.from(context);
factory.inflate(R.layout.browser_find, this);
setLayoutParams(new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
mEditText = (EditText) findViewById(R.id.edit);
View button = findViewById(R.id.next);
button.setOnClickListener(mFindListener);
mNextButton = button;
button = findViewById(R.id.previous);
button.setOnClickListener(mFindPreviousListener);
mPrevButton = button;
button = findViewById(R.id.done);
button.setOnClickListener(mFindCancelListener);
mOk = button;
mMatches = (TextView) findViewById(R.id.matches);
disableButtons();
}
public void dismiss() {
mBrowserActivity.closeFind();
// If the nav buttons are highlighted, then there are matches
// highlighted in the WebView, and they should be cleared.
if (mPrevButton.isEnabled()) {
// Find is disabled for version 1.0, so find methods on WebView are
// currently private.
//mWebView.clearMatches();
}
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
// Make up and down find previous/next
int code = event.getKeyCode();
boolean up = event.getAction() == KeyEvent.ACTION_UP;
switch (code) {
case KeyEvent.KEYCODE_BACK:
if (up) {
dismiss();
}
return true;
case KeyEvent.KEYCODE_DPAD_UP:
if (event.getMetaState() != 0) {
break;
}
if (up) {
mFindPreviousListener.onClick(null);
}
return true;
case KeyEvent.KEYCODE_DPAD_DOWN:
if (event.getMetaState() != 0) {
break;
}
if (up) {
mFindListener.onClick(null);
}
return true;
case KeyEvent.KEYCODE_DPAD_CENTER:
case KeyEvent.KEYCODE_ENTER:
if (!mEditText.hasFocus()) {
break;
}
if (up) {
findNext();
}
return true;
default:
break;
}
return super.dispatchKeyEvent(event);
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
super.dispatchTouchEvent(ev);
// Return true so that BrowserActivity thinks we handled it and does
// not dismiss us.
return true;
}
private void findNext() {
if (mWebView == null) {
throw new AssertionError("No WebView for FindDialog::findNext");
}
// Find is disabled for version 1.0, so find methods on WebView are
// currently private.
//mWebView.findNext(mEditText.getText().toString(),
// mFindHandler.obtainMessage(FIND_RESPONSE));
}
public void show() {
mEditText.requestFocus();
mEditText.setText("");
Spannable span = (Spannable) mEditText.getText();
span.setSpan(this, 0, span.length(),
Spannable.SPAN_INCLUSIVE_INCLUSIVE);
mMatches.setText(R.string.zero);
disableButtons();
}
// TextWatcher methods
public void beforeTextChanged(CharSequence s,
int start,
int count,
int after) {
}
public void onTextChanged(CharSequence s,
int start,
int before,
int count) {
CharSequence find = mEditText.getText();
if (0 == find.length()) {
disableButtons();
// Find is disabled for version 1.0, so find methods on WebView are
// currently private.
//mWebView.clearMatches();
mMatches.setText(R.string.zero);
} else {
if (mWebView == null) {
throw new AssertionError(
"No WebView for FindDialog::onTextChanged");
}
// Find is disabled for version 1.0, so find methods on WebView are
// currently private.
//mWebView.findAll(find.toString(),
// mFindHandler.obtainMessage(NUM_FOUND));
}
}
public void afterTextChanged(Editable s) {
}
}
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