content: /*
   * PhoneGap is available under *either* the terms of the modified BSD license *or* the
   * MIT License (2008). See http://opensource.org/licenses/alphabetical for full text.
   *
   * Copyright (c) 2005-2011, Nitobi Software Inc.
   * Copyright (c) 2010-2011, IBM Corporation
   */
  package com.phonegap.plugins.childBrowser;
  
  import java.io.IOException;
  import java.io.InputStream;
  
  import org.json.JSONArray;
  import org.json.JSONException;
  import org.json.JSONObject;
  
  import android.R.bool;
  import android.app.Dialog;
  import android.content.Context;
  import android.content.DialogInterface;
  import android.content.Intent;
  import android.graphics.Bitmap;
  import android.graphics.BitmapFactory;
  import android.net.Uri;
  import android.util.Log;
  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.InputMethodManager;
  import android.webkit.WebView;
  import android.webkit.WebViewClient;
  import android.widget.EditText;
  import android.widget.ImageButton;
  import android.widget.LinearLayout;
  
  import org.apache.cordova.api.*;
  
  public class ChildBrowser extends Plugin {
  
      protected static final String LOG_TAG = "ChildBrowser";
      private static int CLOSE_EVENT = 0;
      private static int LOCATION_CHANGED_EVENT = 1;
  
      private String browserCallbackId = null;
  
      private Dialog dialog;
      private WebView webview;
      private EditText edittext;
      private boolean showLocationBar = true;
      private boolean showAddress = true;
      private boolean showNavigationBar = true;
  
      /**
       * 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 PluginResult execute(String action, JSONArray args, String callbackId) {
          PluginResult.Status status = PluginResult.Status.OK;
          String result = "";
  
          try {
              if (action.equals("showWebPage")) {
                  this.browserCallbackId = callbackId;
  
                  // If the ChildBrowser is already open then throw an error
                  if (dialog != null && dialog.isShowing()) {
                      return new PluginResult(PluginResult.Status.ERROR, "ChildBrowser is already open");
                  }
  
                  result = this.showWebPage(args.getString(0), args.optJSONObject(1));
  
                  if (result.length() > 0) {
                      status = PluginResult.Status.ERROR;
                      return new PluginResult(status, result);
                  } else {
                      PluginResult pluginResult = new PluginResult(status, result);
                      pluginResult.setKeepCallback(true);
                      return pluginResult;
                  }
              } else if (action.equals("close")) {
                  closeDialog();
  
                  JSONObject obj = new JSONObject();
                  obj.put("type", CLOSE_EVENT);
  
                  PluginResult pluginResult = new PluginResult(status, obj);
                  pluginResult.setKeepCallback(false);
                  return pluginResult;
              } else if (action.equals("openExternal")) {
                  result = this.openExternal(args.getString(0), args.optBoolean(1));
                  if (result.length() > 0) {
                      status = PluginResult.Status.ERROR;
                  }
              } else {
                  status = PluginResult.Status.INVALID_ACTION;
              }
              return new PluginResult(status, result);
          } catch (JSONException e) {
              return new PluginResult(PluginResult.Status.JSON_EXCEPTION);
          }
      }
  
      /**
       * 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, boolean usePhoneGap) {
          try {
              Intent intent = null;
              if (usePhoneGap) {
                  intent = new Intent().setClass((Context) cordova.getActivity(), org.apache.cordova.DroidGap.class);
                  intent.setData(Uri.parse(url)); // This line will be removed in future.
                  intent.putExtra("url", url);
  
                  // Timeout parameter: 60 sec max - May be less if http device timeout is less.
                  intent.putExtra("loadUrlTimeoutValue", 60000);
  
                  // These parameters can be configured if you want to show the loading dialog
                  intent.putExtra("loadingDialog", "Wait,Loading web page...");
                  intent.putExtra("hideLoadingDialogOnPageLoad", true);
              } else {
                  intent = new Intent(Intent.ACTION_VIEW);
                  intent.setData(Uri.parse(url));
              }
              cordova.getActivity().startActivity(intent);
              return "";
          } catch (android.content.ActivityNotFoundException e) {
              Log.d(LOG_TAG, "ChildBrowser: Error loading url " + url + ":" + e.toString());
              return e.toString();
          }
      }
  
      /**
       * Closes the dialog
       */
      private void closeDialog() {
          if (dialog != null) {
              this.webview.stopLoading();
              dialog.dismiss();
          }
      }
  
      /**
       * Sees if it is possible to go back one page in history, then does so
       */
      private void goBack() {
          if (this.webview.canGoBack()) {
              this.webview.goBack();
          }
      }
  
      /**
       * Sees if it is possible to go forward one page in history, then does so
       */
      private void goForward() {
          if (this.webview.canGoForward()) {
              this.webview.goForward();
          }
      }
  
      /**
       * Navigate to the new page
       *
       * @param url to load
       */
      private void navigate(String url) {
          InputMethodManager imm = (InputMethodManager) cordova.getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
          imm.hideSoftInputFromWindow(edittext.getWindowToken(), 0);
  
          if (!url.startsWith("http")) {
              this.webview.loadUrl("http://" + url);
          }
          this.webview.loadUrl(url);
          this.webview.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, JSONObject options) {
          // Determine if we should hide the location bar.
          if (options != null) {
              showLocationBar = options.optBoolean("showLocationBar", true);
              showNavigationBar = options.optBoolean("showNavigationBar", true);
              showAddress = options.optBoolean("showAddress", true);
          }
  
          // Create dialog in new thread
          Runnable runnable = new Runnable() {
              public void run() {
                  dialog = new Dialog((Context) cordova.getActivity());
  
                  dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
                  dialog.setCancelable(true);
                  dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
                      public void onDismiss(DialogInterface dialog) {
                          try {
                              JSONObject obj = new JSONObject();
                              obj.put("type", CLOSE_EVENT);
  
                              sendUpdate(obj, false);
                          } catch (JSONException e) {
                              Log.d(LOG_TAG, "Should never happen");
                          }
                      }
                  });
  
                  LinearLayout.LayoutParams backParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
                  LinearLayout.LayoutParams forwardParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
                  LinearLayout.LayoutParams editParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1.0f);
                  LinearLayout.LayoutParams closeParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
                  LinearLayout.LayoutParams wvParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
                  if (!showAddress) // larger buttons if address bar is not visible
                  {
                      backParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, 1.0f);
                      forwardParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, 1.0f);
                      closeParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, 1.0f);
                  }
  
                  LinearLayout main = new LinearLayout((Context) cordova.getActivity());
                  main.setOrientation(LinearLayout.VERTICAL);
  
                  LinearLayout toolbar = new LinearLayout((Context) cordova.getActivity());
                  toolbar.setOrientation(LinearLayout.HORIZONTAL);
  
                  ImageButton back = new ImageButton((Context) cordova.getActivity());
                  back.setOnClickListener(new View.OnClickListener() {
                      public void onClick(View v) {
                          goBack();
                      }
                  });
                  back.setId(1);
                  try {
                      back.setImageBitmap(loadDrawable("www/childbrowser/icon_arrow_left.png"));
                  } catch (IOException e) {
                      Log.e(LOG_TAG, e.getMessage(), e);
                  }
                  back.setLayoutParams(backParams);
  
                  ImageButton forward = new ImageButton((Context) cordova.getActivity());
                  forward.setOnClickListener(new View.OnClickListener() {
                      public void onClick(View v) {
                          goForward();
                      }
                  });
                  forward.setId(2);
                  try {
                      forward.setImageBitmap(loadDrawable("www/childbrowser/icon_arrow_right.png"));
                  } catch (IOException e) {
                      Log.e(LOG_TAG, e.getMessage(), e);
                  }
                  forward.setLayoutParams(forwardParams);
  
                  edittext = new EditText((Context) cordova.getActivity());
                  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;
                      }
                  });
                  edittext.setId(3);
                  edittext.setSingleLine(true);
                  edittext.setText(url);
                  edittext.setLayoutParams(editParams);
  
                  ImageButton close = new ImageButton(cordova.getActivity());
                  close.setOnClickListener(new View.OnClickListener() {
                      public void onClick(View v) {
                          closeDialog();
                      }
                  });
                  close.setId(4);
                  try {
                      close.setImageBitmap(loadDrawable("www/childbrowser/icon_close.png"));
                  } catch (IOException e) {
                      Log.e(LOG_TAG, e.getMessage(), e);
                  }
                  close.setLayoutParams(closeParams);
  
                  webview = new WebView((Context) cordova.getActivity());
                  webview.getSettings().setJavaScriptEnabled(true);
                  webview.getSettings().setBuiltInZoomControls(true);
                  WebViewClient client = new ChildBrowserClient(ctx, edittext);
                  webview.setWebViewClient(client);
                  webview.loadUrl(url);
                  webview.setId(5);
                  webview.setInitialScale(0);
                  webview.setLayoutParams(wvParams);
                  webview.requestFocus();
                  webview.requestFocusFromTouch();
                  webview.getSettings().setUseWideViewPort(true);
                  webview.getSettings().setLoadWithOverviewMode(true);
                  toolbar.addView(back);
                  toolbar.addView(forward);
                  toolbar.addView(edittext);
                  toolbar.addView(close);
  
                  if (getShowLocationBar()) {
                      main.addView(toolbar);
                  }
                  main.addView(webview);
  
                  WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
                  lp.copyFrom(dialog.getWindow().getAttributes());
                  lp.width = WindowManager.LayoutParams.FILL_PARENT;
                  lp.height = WindowManager.LayoutParams.FILL_PARENT;
  
                  dialog.setContentView(main);
                  dialog.show();
                  dialog.getWindow().setAttributes(lp);
  
                  if (!showNavigationBar) {
                      back.setVisibility(View.GONE);
                      forward.setVisibility(View.GONE);
                      close.setVisibility(View.GONE);
                  }
                  if (!showAddress) {
                      edittext.setVisibility(View.GONE);
                  }
              }
  
              private Bitmap loadDrawable(String filename) throws java.io.IOException {
                  InputStream input = cordova.getActivity().getAssets().open(filename);
                  return BitmapFactory.decodeStream(input);
              }
          };
          cordova.getActivity().runOnUiThread(runnable);
          return "";
      }
  
      /**
       * Create a new plugin result and send it back to JavaScript
       *
       * @param obj a JSONObject contain event payload information
       */
      private void sendUpdate(JSONObject obj, boolean keepCallback) {
          if (this.browserCallbackId != null) {
              PluginResult result = new PluginResult(PluginResult.Status.OK, obj);
              result.setKeepCallback(keepCallback);
              this.success(result, this.browserCallbackId);
          }
      }
  
      /**
       * The webview client receives notifications about appView
       */
      public class ChildBrowserClient extends WebViewClient {
          CordovaInterface ctx;
          EditText edittext;
  
          /**
           * Constructor.
           *
           * @param mContext
           * @param edittext
           */
          public ChildBrowserClient(CordovaInterface mContext, EditText mEditText) {
              this.ctx = mContext;
              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(WebView view, String url, Bitmap favicon) {
              super.onPageStarted(view, url, favicon);
              String newloc;
              if (url.startsWith("http:") || url.startsWith("https:")) {
                  newloc = url;
              } else {
                  newloc = "http://" + url;
              }
  
              if (!newloc.equals(edittext.getText().toString())) {
                  edittext.setText(newloc);
              }
  
              try {
                  JSONObject obj = new JSONObject();
                  obj.put("type", LOCATION_CHANGED_EVENT);
                  obj.put("location", url);
  
                  sendUpdate(obj, true);
              } catch (JSONException e) {
                  Log.d("ChildBrowser", "This should never happen");
              }
          }
      }
  }
  