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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.app.Dialog;
import android.content.Context;
import android.content.res.Configuration;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.text.Editable;
import android.text.Spannable;
import android.text.TextWatcher;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.webkit.WebView;
import android.widget.EditText;
import android.widget.TextView;
/* package */ class FindDialog extends Dialog 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;
private View mMatchesView;
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");
}
mWebView.findNext(false);
hideSoftInput();
}
};
/*
* Remove the soft keyboard from the screen.
*/
private void hideSoftInput() {
InputMethodManager imm = (InputMethodManager)
mBrowserActivity.getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(mEditText.getWindowToken(), 0);
}
private void disableButtons() {
mPrevButton.setEnabled(false);
mNextButton.setEnabled(false);
mPrevButton.setFocusable(false);
mNextButton.setFocusable(false);
}
/* package */ void setWebView(WebView webview) {
mWebView = webview;
}
/* package */ FindDialog(BrowserActivity context) {
super(context, R.style.FindDialogTheme);
mBrowserActivity = context;
setCanceledOnTouchOutside(true);
}
/* package */ void onConfigurationChanged(Configuration newConfig) {
// FIXME: Would like to call mWebView.findAll again, so that the
// matches would refresh, but the new picture has not yet been
// created, so it is too soon.
mEditText.getText().clear();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Window theWindow = getWindow();
theWindow.setGravity(Gravity.BOTTOM|Gravity.FILL_HORIZONTAL);
setContentView(R.layout.browser_find);
theWindow.setLayout(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);
mMatchesView = findViewById(R.id.matches_view);
disableButtons();
theWindow.setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
}
public void dismiss() {
super.dismiss();
mBrowserActivity.closeFind();
mWebView.clearMatches();
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
int code = event.getKeyCode();
boolean up = event.getAction() == KeyEvent.ACTION_UP;
switch (code) {
case KeyEvent.KEYCODE_DPAD_CENTER:
case KeyEvent.KEYCODE_ENTER:
if (!mEditText.hasFocus()) {
break;
}
if (up) {
findNext();
}
return true;
default:
break;
}
return super.dispatchKeyEvent(event);
}
private void findNext() {
if (mWebView == null) {
throw new AssertionError("No WebView for FindDialog::findNext");
}
mWebView.findNext(true);
hideSoftInput();
}
public void show() {
super.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) {
if (mWebView == null) {
throw new AssertionError(
"No WebView for FindDialog::onTextChanged");
}
CharSequence find = mEditText.getText();
if (0 == find.length()) {
disableButtons();
mWebView.clearMatches();
mMatchesView.setVisibility(View.INVISIBLE);
} else {
mMatchesView.setVisibility(View.VISIBLE);
int found = mWebView.findAll(find.toString());
mMatches.setText(Integer.toString(found));
if (found < 2) {
disableButtons();
if (found == 0) {
mMatches.setText(R.string.zero);
}
} else {
mPrevButton.setFocusable(true);
mNextButton.setFocusable(true);
mPrevButton.setEnabled(true);
mNextButton.setEnabled(true);
}
}
}
public void afterTextChanged(Editable s) {
}
}
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