android/src/org/webodf/WebODFView.java

   1 package org.webodf;
   2
   3 import java.io.FileInputStream;
   4 import java.io.IOException;
   5 import java.io.StringWriter;
   6
   7 import android.app.Activity;
   8 import android.os.Bundle;
   9 import android.util.Log;
  10 import android.view.KeyEvent;
  11 import android.webkit.WebChromeClient;
  12 import android.webkit.WebSettings;
  13 import android.webkit.WebView;
  14 import android.webkit.WebViewClient;
  15 import android.widget.Toast;
  16
  17 public class WebODFView extends Activity {
  18         WebView mWebView;
  19         FileReader filereader;
  20
  21         public void onCreate(Bundle savedInstanceState) {
  22                 super.onCreate(savedInstanceState);
  23                 setContentView(R.layout.main);
  24
  25                 filereader = new FileReader(this, getIntent().getData().getPath());
  26
  27                 mWebView = (WebView) findViewById(R.id.webview);
  28                 mWebView.setNetworkAvailable(false);
  29                 mWebView.setWebViewClient(new WebODFViewClient());
  30                 mWebView.setWebChromeClient(new WebODFChromeClient());
  31                 WebSettings webSettings = mWebView.getSettings();
  32                 webSettings.setJavaScriptEnabled(true);
  33                 webSettings.setSupportZoom(true);
  34                 webSettings.setBuiltInZoomControls(true);
  35                 mWebView.addJavascriptInterface(filereader, "filereader");
  36
  37                 mWebView.loadUrl("file:///android_asset/odf.html");
  38         }
  39
  40         private class WebODFChromeClient extends WebChromeClient {
  41                 @SuppressWarnings("unused")
  42                 // used in higher version of api
  43                 public void onConsoleMessage(String message, int lineNumber,
  44                                 String sourceID) {
  45                         log(message + " -- From line " + lineNumber + " of " + sourceID);
  46                 }
  47         }
  48
  49         void log(String msg) {
  50                 String tag = "WebODF";
  51                 Toast.makeText(this, tag + " -- " + msg, Toast.LENGTH_LONG).show();
  52                 Log.d(tag, msg);
  53         }
  54
  55         private class WebODFViewClient extends WebViewClient {
  56
  57                 @Override
  58                 public void onPageFinished(WebView view, String url) {
  59                         //mWebView.loadUrl("javascript:(function() {alert(counter.getit());})() ");
  60                         //String data = fileToBase64String(getIntent().getData().getPath());
  61                         mWebView.loadUrl("javascript:(function() { "
  62                                 //      + "var data = window.atob(\"" + data + "\");"
  63                                         + "runtime.read = function(path, offset, length, callback) {"
  64                                         + "      var s = filereader.read(offset, length);"
  65                                         + "      callback(null, String(s));"
  66                                         + "};"
  67                                         + "runtime.getFileSize = function(path, callback) {"
  68                                         + "    callback(filereader.length());"
  69                                         + "};"
  70                                         + "window.odfcontainer = new window.odf.OdfContainer('"
  71                                         + "        odffile'); refreshOdf();"
  72                                         + "})()");
  73                 }
  74
  75                 @Override
  76                 public void onReceivedError(WebView view, int errorCode,
  77                                 String description, String failingUrl) {
  78                         log("Error " + Integer.toString(errorCode) + ": " + description
  79                                         + " " + failingUrl);
  80                 }
  81         }
  82
  83         @Override
  84         public boolean onKeyDown(int keyCode, KeyEvent event) {
  85                 if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
  86                         mWebView.goBack();
  87                         return true;
  88                 }
  89                 return super.onKeyDown(keyCode, event);
  90         }
  91
  92         public String fileToBase64String(String path) {
  93                 StringWriter sw = new StringWriter();
  94                 Base64OutputStream base64 = new Base64OutputStream(sw);
  95                 try {
  96                         FileInputStream i = new FileInputStream(path);
  97                         int c;
  98                         while ((c = i.read()) != -1) {
  99                                 base64.write(c);
 100                         }
 101                         i.close();
 102                         base64.close();
 103                         sw.close();
 104                 } catch (IOException e) {
 105                 }
 106                 return sw.toString();
 107         }
 108 }