JsDialogHelperpublic class JsDialogHelper extends Object | Helper class to create JavaScript dialogs. It is used by
different WebView implementations. |
| Fields Summary |
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| private static final String | TAG | | public static final int | ALERT | | public static final int | CONFIRM | | public static final int | PROMPT | | public static final int | UNLOAD | | private final String | mDefaultValue | | private final JsPromptResult | mResult | | private final String | mMessage | | private final int | mType | | private final String | mUrl |
| Constructors Summary |
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public JsDialogHelper(JsPromptResult result, int type, String defaultValue, String message, String url)
mResult = result;
mDefaultValue = defaultValue;
mMessage = message;
mType = type;
mUrl = url;
| public JsDialogHelper(JsPromptResult result, android.os.Message msg)
mResult = result;
mDefaultValue = msg.getData().getString("default");
mMessage = msg.getData().getString("message");
mType = msg.getData().getInt("type");
mUrl = msg.getData().getString("url");
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| Methods Summary |
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| private static boolean | canShowAlertDialog(android.content.Context context)
// We can only display the alert dialog if mContext is
// an Activity context.
// FIXME: Should we display dialogs if mContext does
// not have the window focus (e.g. if the user is viewing
// another Activity when the alert should be displayed) ?
// See bug 3166409
return context instanceof Activity;
| | private java.lang.String | getJsDialogTitle(android.content.Context context)
String title = mUrl;
if (URLUtil.isDataUrl(mUrl)) {
// For data: urls, we just display 'JavaScript' similar to Chrome.
title = context.getString(com.android.internal.R.string.js_dialog_title_default);
} else {
try {
URL alertUrl = new URL(mUrl);
// For example: "The page at 'http://www.mit.edu' says:"
title = context.getString(com.android.internal.R.string.js_dialog_title,
alertUrl.getProtocol() + "://" + alertUrl.getHost());
} catch (MalformedURLException ex) {
// do nothing. just use the url as the title
}
}
return title;
| | public boolean | invokeCallback(WebChromeClient client, WebView webView)
switch (mType) {
case ALERT:
return client.onJsAlert(webView, mUrl, mMessage, mResult);
case CONFIRM:
return client.onJsConfirm(webView, mUrl, mMessage, mResult);
case UNLOAD:
return client.onJsBeforeUnload(webView, mUrl, mMessage, mResult);
case PROMPT:
return client.onJsPrompt(webView, mUrl, mMessage, mDefaultValue, mResult);
default:
throw new IllegalArgumentException("Unexpected type: " + mType);
}
| | public void | showDialog(android.content.Context context)
if (!canShowAlertDialog(context)) {
Log.w(TAG, "Cannot create a dialog, the WebView context is not an Activity");
mResult.cancel();
return;
}
String title, displayMessage;
int positiveTextId, negativeTextId;
if (mType == UNLOAD) {
title = context.getString(com.android.internal.R.string.js_dialog_before_unload_title);
displayMessage = context.getString(
com.android.internal.R.string.js_dialog_before_unload, mMessage);
positiveTextId = com.android.internal.R.string.js_dialog_before_unload_positive_button;
negativeTextId = com.android.internal.R.string.js_dialog_before_unload_negative_button;
} else {
title = getJsDialogTitle(context);
displayMessage = mMessage;
positiveTextId = com.android.internal.R.string.ok;
negativeTextId = com.android.internal.R.string.cancel;
}
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle(title);
builder.setOnCancelListener(new CancelListener());
if (mType != PROMPT) {
builder.setMessage(displayMessage);
builder.setPositiveButton(positiveTextId, new PositiveListener(null));
} else {
final View view = LayoutInflater.from(context).inflate(
com.android.internal.R.layout.js_prompt, null);
EditText edit = ((EditText) view.findViewById(com.android.internal.R.id.value));
edit.setText(mDefaultValue);
builder.setPositiveButton(positiveTextId, new PositiveListener(edit));
((TextView) view.findViewById(com.android.internal.R.id.message)).setText(mMessage);
builder.setView(view);
}
if (mType != ALERT) {
builder.setNegativeButton(negativeTextId, new CancelListener());
}
builder.show();
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