Java tutorial
/* Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you 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.oonhee.oojs.inappbrowser; import android.annotation.SuppressLint; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.graphics.Bitmap; import android.net.Uri; import android.os.Bundle; import android.text.InputType; import android.util.Log; import android.util.TypedValue; import android.view.Gravity; import android.view.KeyEvent; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.view.WindowManager.LayoutParams; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputMethodManager; import com.amazon.android.webkit.AmazonWebChromeClient; import com.amazon.android.webkit.AmazonGeolocationPermissions.Callback; import com.amazon.android.webkit.AmazonJsPromptResult; import com.amazon.android.webkit.AmazonWebSettings; import com.amazon.android.webkit.AmazonWebStorage; import com.amazon.android.webkit.AmazonWebView; import com.amazon.android.webkit.AmazonWebViewClient; import com.amazon.android.webkit.AmazonCookieManager; import android.widget.Button; import android.widget.EditText; import android.widget.LinearLayout; import android.widget.RelativeLayout; import org.apache.cordova.CallbackContext; import org.apache.cordova.Config; import org.apache.cordova.CordovaArgs; import org.apache.cordova.CordovaPlugin; import org.apache.cordova.CordovaWebView; import org.apache.cordova.LOG; import org.apache.cordova.PluginResult; import org.apache.cordova.CordovaActivity; import org.json.JSONException; import org.json.JSONObject; import java.util.HashMap; import java.util.StringTokenizer; @SuppressLint("SetJavaScriptEnabled") public class InAppBrowser extends CordovaPlugin { private static final String NULL = "null"; protected static final String LOG_TAG = "InAppBrowser"; private static final String SELF = "_self"; private static final String SYSTEM = "_system"; // private static final String BLANK = "_blank"; private static final String EXIT_EVENT = "exit"; private static final String LOCATION = "location"; private static final String HIDDEN = "hidden"; private static final String LOAD_START_EVENT = "loadstart"; private static final String LOAD_STOP_EVENT = "loadstop"; private static final String LOAD_ERROR_EVENT = "loaderror"; private static final String CLOSE_BUTTON_CAPTION = "closebuttoncaption"; private static final String CLEAR_ALL_CACHE = "clearcache"; private static final String CLEAR_SESSION_CACHE = "clearsessioncache"; private Dialog dialog; private AmazonWebView inAppWebView; private EditText edittext; private CallbackContext callbackContext; private boolean showLocationBar = true; private boolean openWindowHidden = false; private String buttonLabel = "Done"; private boolean clearAllCache = false; private boolean clearSessionCache = false; /** * Executes the request and returns PluginResult. * * @param action The action to execute. * @param args JSONArry of arguments for the plugin. * @param callbackId The callback id used when calling back into JavaScript. * @return A PluginResult object with a status and message. */ public boolean execute(String action, CordovaArgs args, final CallbackContext callbackContext) throws JSONException { if (action.equals("open")) { this.callbackContext = callbackContext; final String url = args.getString(0); String t = args.optString(1); if (t == null || t.equals("") || t.equals(NULL)) { t = SELF; } final String target = t; final HashMap<String, Boolean> features = parseFeature(args.optString(2)); Log.d(LOG_TAG, "target = " + target); this.cordova.getActivity().runOnUiThread(new Runnable() { @Override public void run() { String result = ""; // SELF if (SELF.equals(target)) { Log.d(LOG_TAG, "in self"); // load in webview if (url.startsWith("file://") || url.startsWith("javascript:") || Config.isUrlWhiteListed(url)) { webView.loadUrl(url); } //Load the dialer else if (url.startsWith(AmazonWebView.SCHEME_TEL)) { try { Intent intent = new Intent(Intent.ACTION_DIAL); intent.setData(Uri.parse(url)); cordova.getActivity().startActivity(intent); } catch (android.content.ActivityNotFoundException e) { LOG.e(LOG_TAG, "Error dialing " + url + ": " + e.toString()); } } // load in InAppBrowser else { result = showWebPage(url, features); } } // SYSTEM else if (SYSTEM.equals(target)) { Log.d(LOG_TAG, "in system"); result = openExternal(url); } // BLANK - or anything else else { Log.d(LOG_TAG, "in blank"); result = showWebPage(url, features); } PluginResult pluginResult = new PluginResult(PluginResult.Status.OK, result); pluginResult.setKeepCallback(true); callbackContext.sendPluginResult(pluginResult); } }); } else if (action.equals("close")) { closeDialog(); } else if (action.equals("injectScriptCode")) { String jsWrapper = null; if (args.getBoolean(1)) { jsWrapper = String.format("prompt(JSON.stringify([eval(%%s)]), 'gap-iab://%s')", callbackContext.getCallbackId()); } injectDeferredObject(args.getString(0), jsWrapper); } else if (action.equals("injectScriptFile")) { String jsWrapper; if (args.getBoolean(1)) { jsWrapper = String.format( "(function(d) { var c = d.createElement('script'); c.src = %%s; c.onload = function() { prompt('', 'gap-iab://%s'); }; d.body.appendChild(c); })(document)", callbackContext.getCallbackId()); } else { jsWrapper = "(function(d) { var c = d.createElement('script'); c.src = %s; d.body.appendChild(c); })(document)"; } injectDeferredObject(args.getString(0), jsWrapper); } else if (action.equals("injectStyleCode")) { String jsWrapper; if (args.getBoolean(1)) { jsWrapper = String.format( "(function(d) { var c = d.createElement('style'); c.innerHTML = %%s; d.body.appendChild(c); prompt('', 'gap-iab://%s');})(document)", callbackContext.getCallbackId()); } else { jsWrapper = "(function(d) { var c = d.createElement('style'); c.innerHTML = %s; d.body.appendChild(c); })(document)"; } injectDeferredObject(args.getString(0), jsWrapper); } else if (action.equals("injectStyleFile")) { String jsWrapper; if (args.getBoolean(1)) { jsWrapper = String.format( "(function(d) { var c = d.createElement('link'); c.rel='stylesheet'; c.type='text/css'; c.href = %%s; d.head.appendChild(c); prompt('', 'gap-iab://%s');})(document)", callbackContext.getCallbackId()); } else { jsWrapper = "(function(d) { var c = d.createElement('link'); c.rel='stylesheet'; c.type='text/css'; c.href = %s; d.head.appendChild(c); })(document)"; } injectDeferredObject(args.getString(0), jsWrapper); } else if (action.equals("show")) { this.cordova.getActivity().runOnUiThread(new Runnable() { @Override public void run() { dialog.show(); } }); PluginResult pluginResult = new PluginResult(PluginResult.Status.OK); pluginResult.setKeepCallback(true); this.callbackContext.sendPluginResult(pluginResult); } else { return false; } return true; } /** * Called when the view navigates. */ @Override public void onReset() { closeDialog(); } /** * Called by AccelBroker when listener is to be shut down. * Stop listener. */ public void onDestroy() { closeDialog(); } /** * Inject an object (script or style) into the InAppBrowser AmazonWebView. * * This is a helper method for the inject{Script|Style}{Code|File} API calls, which * provides a consistent method for injecting JavaScript code into the document. * * If a wrapper string is supplied, then the source string will be JSON-encoded (adding * quotes) and wrapped using string formatting. (The wrapper string should have a single * '%s' marker) * * @param source The source object (filename or script/style text) to inject into * the document. * @param jsWrapper A JavaScript string to wrap the source string in, so that the object * is properly injected, or null if the source string is JavaScript text * which should be executed directly. */ private void injectDeferredObject(String source, String jsWrapper) { final String scriptToInject; if (jsWrapper != null) { org.json.JSONArray jsonEsc = new org.json.JSONArray(); jsonEsc.put(source); String jsonRepr = jsonEsc.toString(); String jsonSourceString = jsonRepr.substring(1, jsonRepr.length() - 1); scriptToInject = String.format(jsWrapper, jsonSourceString); } else { scriptToInject = source; } final String finalScriptToInject = scriptToInject; // This action will have the side-effect of blurring the currently focused element this.cordova.getActivity().runOnUiThread(new Runnable() { @Override public void run() { inAppWebView.loadUrl("javascript:" + finalScriptToInject); } }); } /** * Put the list of features into a hash map * * @param optString * @return */ private HashMap<String, Boolean> parseFeature(String optString) { if (optString.equals(NULL)) { return null; } else { HashMap<String, Boolean> map = new HashMap<String, Boolean>(); StringTokenizer features = new StringTokenizer(optString, ","); StringTokenizer option; while (features.hasMoreElements()) { option = new StringTokenizer(features.nextToken(), "="); if (option.hasMoreElements()) { String key = option.nextToken(); if (key.equalsIgnoreCase(CLOSE_BUTTON_CAPTION)) { this.buttonLabel = option.nextToken(); } else { Boolean value = option.nextToken().equals("no") ? Boolean.FALSE : Boolean.TRUE; map.put(key, value); } } } return map; } } /** * Display a new browser with the specified URL. * * @param url The url to load. * @param usePhoneGap Load url in PhoneGap webview * @return "" if ok, or error message. */ public String openExternal(String url) { try { Intent intent = null; intent = new Intent(Intent.ACTION_VIEW); intent.setData(Uri.parse(url)); this.cordova.getActivity().startActivity(intent); return ""; } catch (android.content.ActivityNotFoundException e) { Log.d(LOG_TAG, "InAppBrowser: Error loading url " + url + ":" + e.toString()); return e.toString(); } } /** * Closes the dialog */ public void closeDialog() { this.cordova.getActivity().runOnUiThread(new Runnable() { public void run() { if (dialog != null) { dialog.dismiss(); } } }); } /** * Checks to see if it is possible to go back one page in history, then does so. */ private void goBack() { this.cordova.getActivity().runOnUiThread(new Runnable() { public void run() { if (InAppBrowser.this.inAppWebView.canGoBack()) { InAppBrowser.this.inAppWebView.goBack(); } } }); } /** * Checks to see if it is possible to go forward one page in history, then does so. */ private void goForward() { this.cordova.getActivity().runOnUiThread(new Runnable() { public void run() { if (InAppBrowser.this.inAppWebView.canGoForward()) { InAppBrowser.this.inAppWebView.goForward(); } } }); } /** * Navigate to the new page * * @param url to load */ private void navigate(final String url) { InputMethodManager imm = (InputMethodManager) this.cordova.getActivity() .getSystemService(Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(edittext.getWindowToken(), 0); this.cordova.getActivity().runOnUiThread(new Runnable() { public void run() { if (!url.startsWith("http") && !url.startsWith("file:")) { InAppBrowser.this.inAppWebView.loadUrl("http://" + url); } else { InAppBrowser.this.inAppWebView.loadUrl(url); } InAppBrowser.this.inAppWebView.requestFocus(); } }); } /** * Should we show the location bar? * * @return boolean */ private boolean getShowLocationBar() { return this.showLocationBar; } /** * Display a new browser with the specified URL. * * @param url The url to load. * @param jsonObject */ public String showWebPage(final String url, HashMap<String, Boolean> features) { // Determine if we should hide the location bar. showLocationBar = true; openWindowHidden = false; if (features != null) { Boolean show = features.get(LOCATION); if (show != null) { showLocationBar = show.booleanValue(); } Boolean hidden = features.get(HIDDEN); if (hidden != null) { openWindowHidden = hidden.booleanValue(); } Boolean cache = features.get(CLEAR_ALL_CACHE); if (cache != null) { clearAllCache = cache.booleanValue(); } else { cache = features.get(CLEAR_SESSION_CACHE); if (cache != null) { clearSessionCache = cache.booleanValue(); } } } final CordovaWebView thatWebView = this.webView; // Create dialog in new thread Runnable runnable = new Runnable() { /** * Convert our DIP units to Pixels * * @return int */ private int dpToPixels(int dipValue) { int value = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, (float) dipValue, cordova.getActivity().getResources().getDisplayMetrics()); return value; } public void run() { // Let's create the main dialog dialog = new Dialog(cordova.getActivity(), android.R.style.Theme_NoTitleBar); dialog.getWindow().getAttributes().windowAnimations = android.R.style.Animation_Dialog; dialog.requestWindowFeature(Window.FEATURE_NO_TITLE); dialog.setCancelable(true); dialog.setOnDismissListener(new DialogInterface.OnDismissListener() { public void onDismiss(DialogInterface dialog) { closeDialog(); } }); // Main container layout LinearLayout main = new LinearLayout(cordova.getActivity()); main.setOrientation(LinearLayout.VERTICAL); // Toolbar layout RelativeLayout toolbar = new RelativeLayout(cordova.getActivity()); //Please, no more black! toolbar.setBackgroundColor(android.graphics.Color.LTGRAY); toolbar.setLayoutParams( new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, this.dpToPixels(44))); toolbar.setPadding(this.dpToPixels(2), this.dpToPixels(2), this.dpToPixels(2), this.dpToPixels(2)); toolbar.setHorizontalGravity(Gravity.LEFT); toolbar.setVerticalGravity(Gravity.TOP); // Action Button Container layout RelativeLayout actionButtonContainer = new RelativeLayout(cordova.getActivity()); actionButtonContainer.setLayoutParams( new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); actionButtonContainer.setHorizontalGravity(Gravity.LEFT); actionButtonContainer.setVerticalGravity(Gravity.CENTER_VERTICAL); actionButtonContainer.setId(1); // Back button Button back = new Button(cordova.getActivity()); RelativeLayout.LayoutParams backLayoutParams = new RelativeLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT); backLayoutParams.addRule(RelativeLayout.ALIGN_LEFT); back.setLayoutParams(backLayoutParams); back.setContentDescription("Back Button"); back.setId(2); back.setText("<"); back.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { goBack(); } }); // Forward button Button forward = new Button(cordova.getActivity()); RelativeLayout.LayoutParams forwardLayoutParams = new RelativeLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT); forwardLayoutParams.addRule(RelativeLayout.RIGHT_OF, 2); forward.setLayoutParams(forwardLayoutParams); forward.setContentDescription("Forward Button"); forward.setId(3); forward.setText(">"); forward.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { goForward(); } }); // Edit Text Box edittext = new EditText(cordova.getActivity()); RelativeLayout.LayoutParams textLayoutParams = new RelativeLayout.LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); textLayoutParams.addRule(RelativeLayout.RIGHT_OF, 1); textLayoutParams.addRule(RelativeLayout.LEFT_OF, 5); edittext.setLayoutParams(textLayoutParams); edittext.setId(4); edittext.setSingleLine(true); edittext.setText(url); edittext.setInputType(InputType.TYPE_TEXT_VARIATION_URI); edittext.setImeOptions(EditorInfo.IME_ACTION_GO); edittext.setInputType(InputType.TYPE_NULL); // Will not except input... Makes the text NON-EDITABLE edittext.setOnKeyListener(new View.OnKeyListener() { public boolean onKey(View v, int keyCode, KeyEvent event) { // If the event is a key-down event on the "enter" button if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) { navigate(edittext.getText().toString()); return true; } return false; } }); // Close button Button close = new Button(cordova.getActivity()); RelativeLayout.LayoutParams closeLayoutParams = new RelativeLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT); closeLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT); close.setLayoutParams(closeLayoutParams); forward.setContentDescription("Close Button"); close.setId(5); close.setText(buttonLabel); close.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { closeDialog(); } }); // WebView inAppWebView = new AmazonWebView(cordova.getActivity()); CordovaActivity app = (CordovaActivity) cordova.getActivity(); cordova.getFactory().initializeWebView(inAppWebView, 0x00FF00, false, null); inAppWebView.setLayoutParams( new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)); inAppWebView.setWebChromeClient(new InAppChromeClient(thatWebView)); AmazonWebViewClient client = new InAppBrowserClient(thatWebView, edittext); inAppWebView.setWebViewClient(client); AmazonWebSettings settings = inAppWebView.getSettings(); settings.setJavaScriptEnabled(true); settings.setJavaScriptCanOpenWindowsAutomatically(true); settings.setBuiltInZoomControls(true); settings.setPluginState(com.amazon.android.webkit.AmazonWebSettings.PluginState.ON); //Toggle whether this is enabled or not! Bundle appSettings = cordova.getActivity().getIntent().getExtras(); boolean enableDatabase = appSettings == null ? true : appSettings.getBoolean("InAppBrowserStorageEnabled", true); if (enableDatabase) { String databasePath = cordova.getActivity().getApplicationContext() .getDir("inAppBrowserDB", Context.MODE_PRIVATE).getPath(); settings.setDatabasePath(databasePath); settings.setDatabaseEnabled(true); } settings.setDomStorageEnabled(true); if (clearAllCache) { AmazonCookieManager.getInstance().removeAllCookie(); } else if (clearSessionCache) { AmazonCookieManager.getInstance().removeSessionCookie(); } inAppWebView.loadUrl(url); inAppWebView.setId(6); inAppWebView.getSettings().setLoadWithOverviewMode(true); inAppWebView.getSettings().setUseWideViewPort(true); inAppWebView.requestFocus(); inAppWebView.requestFocusFromTouch(); // Add the back and forward buttons to our action button container layout actionButtonContainer.addView(back); actionButtonContainer.addView(forward); // Add the views to our toolbar toolbar.addView(actionButtonContainer); toolbar.addView(edittext); toolbar.addView(close); // Don't add the toolbar if its been disabled if (getShowLocationBar()) { // Add our toolbar to our main view/layout main.addView(toolbar); } // Add our webview to our main view/layout main.addView(inAppWebView); WindowManager.LayoutParams lp = new WindowManager.LayoutParams(); lp.copyFrom(dialog.getWindow().getAttributes()); lp.width = WindowManager.LayoutParams.MATCH_PARENT; lp.height = WindowManager.LayoutParams.MATCH_PARENT; dialog.setContentView(main); dialog.show(); dialog.getWindow().setAttributes(lp); // the goal of openhidden is to load the url and not display it // Show() needs to be called to cause the URL to be loaded if (openWindowHidden) { dialog.hide(); } } }; this.cordova.getActivity().runOnUiThread(runnable); return ""; } /** * Create a new plugin success result and send it back to JavaScript * * @param obj a JSONObject contain event payload information */ private void sendUpdate(JSONObject obj, boolean keepCallback) { sendUpdate(obj, keepCallback, PluginResult.Status.OK); } /** * Create a new plugin result and send it back to JavaScript * * @param obj a JSONObject contain event payload information * @param status the status code to return to the JavaScript environment */ private void sendUpdate(JSONObject obj, boolean keepCallback, PluginResult.Status status) { if (callbackContext != null) { PluginResult result = new PluginResult(status, obj); result.setKeepCallback(keepCallback); callbackContext.sendPluginResult(result); if (!keepCallback) { callbackContext = null; } } } /** * The webview client receives notifications about appView */ public class InAppBrowserClient extends AmazonWebViewClient { EditText edittext; CordovaWebView webView; /** * Constructor. * * @param mContext * @param edittext */ public InAppBrowserClient(CordovaWebView webView, EditText mEditText) { this.webView = webView; this.edittext = mEditText; } /** * Notify the host application that a page has started loading. * * @param view The webview initiating the callback. * @param url The url of the page. */ @Override public void onPageStarted(AmazonWebView view, String url, Bitmap favicon) { super.onPageStarted(view, url, favicon); String newloc = ""; if (url.startsWith("http:") || url.startsWith("https:") || url.startsWith("file:")) { newloc = url; } // If dialing phone (tel:5551212) else if (url.startsWith(AmazonWebView.SCHEME_TEL)) { try { Intent intent = new Intent(Intent.ACTION_DIAL); intent.setData(Uri.parse(url)); cordova.getActivity().startActivity(intent); } catch (android.content.ActivityNotFoundException e) { LOG.e(LOG_TAG, "Error dialing " + url + ": " + e.toString()); } } else if (url.startsWith("geo:") || url.startsWith(AmazonWebView.SCHEME_MAILTO) || url.startsWith("market:")) { try { Intent intent = new Intent(Intent.ACTION_VIEW); intent.setData(Uri.parse(url)); cordova.getActivity().startActivity(intent); } catch (android.content.ActivityNotFoundException e) { LOG.e(LOG_TAG, "Error with " + url + ": " + e.toString()); } } // If sms:5551212?body=This is the message else if (url.startsWith("sms:")) { try { Intent intent = new Intent(Intent.ACTION_VIEW); // Get address String address = null; int parmIndex = url.indexOf('?'); if (parmIndex == -1) { address = url.substring(4); } else { address = url.substring(4, parmIndex); // If body, then set sms body Uri uri = Uri.parse(url); String query = uri.getQuery(); if (query != null) { if (query.startsWith("body=")) { intent.putExtra("sms_body", query.substring(5)); } } } intent.setData(Uri.parse("sms:" + address)); intent.putExtra("address", address); intent.setType("vnd.android-dir/mms-sms"); cordova.getActivity().startActivity(intent); } catch (android.content.ActivityNotFoundException e) { LOG.e(LOG_TAG, "Error sending sms " + url + ":" + e.toString()); } } else { newloc = "http://" + url; } if (!newloc.equals(edittext.getText().toString())) { edittext.setText(newloc); } try { JSONObject obj = new JSONObject(); obj.put("type", LOAD_START_EVENT); obj.put("url", newloc); sendUpdate(obj, true); } catch (JSONException ex) { Log.d(LOG_TAG, "Should never happen"); } } public void onPageFinished(AmazonWebView view, String url) { super.onPageFinished(view, url); try { JSONObject obj = new JSONObject(); obj.put("type", LOAD_STOP_EVENT); obj.put("url", url); sendUpdate(obj, true); } catch (JSONException ex) { Log.d(LOG_TAG, "Should never happen"); } } public void onReceivedError(AmazonWebView view, int errorCode, String description, String failingUrl) { super.onReceivedError(view, errorCode, description, failingUrl); try { JSONObject obj = new JSONObject(); obj.put("type", LOAD_ERROR_EVENT); obj.put("url", failingUrl); obj.put("code", errorCode); obj.put("message", description); sendUpdate(obj, true, PluginResult.Status.ERROR); } catch (JSONException ex) { Log.d(LOG_TAG, "Should never happen"); } } } }