[Experimental] WebChromeClient for <input type="file">

plugins/Android/project.properties

@@ -0,0 +1,12 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system use,
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+android.library=true
+
+# Project target.
+target=android-23

plugins/Android/src/net/gree/unitywebview/CWebViewPlugin.java

@@ -22,6 +22,7 @@
 package net.gree.unitywebview;
 
 import android.app.Activity;
+import android.app.Fragment;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
@@ -31,6 +32,9 @@
 import android.graphics.Point;
 import android.net.Uri;
 import android.os.Build;
+import android.os.Environment;
+import android.provider.MediaStore;
+import android.util.Log;
 import android.view.Gravity;
 import android.view.View;
 import android.view.ViewGroup.LayoutParams;
@@ -49,12 +53,16 @@
 import android.webkit.CookieSyncManager;
 import android.widget.FrameLayout;
 import android.webkit.PermissionRequest;
+import android.webkit.ValueCallback;
 // import android.support.v4.app.ActivityCompat;
-// import android.util.Log;
 
+import java.io.File;
+import java.io.IOException;
 import java.net.HttpURLConnection;
 import java.net.URL;
 import java.net.URLEncoder;
+import java.text.SimpleDateFormat;
+import java.util.Date;
 import java.util.HashMap;
 import java.util.Hashtable;
 import java.util.List;
@@ -89,7 +97,7 @@ public void call(final String method, final String message) {
     }
 }
 
-public class CWebViewPlugin {
+public class CWebViewPlugin extends Fragment {
     private static FrameLayout layout = null;
     private WebView mWebView;
     private OnGlobalLayoutListener mGlobalLayoutListener;
@@ -103,7 +111,69 @@ public class CWebViewPlugin {
     private Pattern mAllowRegex;
     private Pattern mDenyRegex;
 
+    private static final int INPUT_FILE_REQUEST_CODE = 1;
+    private ValueCallback<Uri> mUploadMessage;
+    private ValueCallback<Uri[]> mFilePathCallback;
+    private String mCameraPhotoPath;
+
     public CWebViewPlugin() {
+        final Activity a = UnityPlayer.currentActivity;
+        final CWebViewPlugin self = this;
+        a.runOnUiThread(new Runnable() {public void run() {
+            a
+                .getFragmentManager()
+                .beginTransaction()
+                .add(0, self, "CWebViewPlugin")
+                .commit();
+        }});
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (requestCode != INPUT_FILE_REQUEST_CODE) {
+            super.onActivityResult(requestCode, resultCode, data);
+            return;
+        }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            if (mFilePathCallback == null) {
+                super.onActivityResult(requestCode, resultCode, data);
+                return;
+            }
+            Uri[] results = null;
+            // Check that the response is a good one
+            if (resultCode == Activity.RESULT_OK) {
+                if (data == null) {
+                    if (mCameraPhotoPath != null) {
+                        results = new Uri[] { Uri.parse(mCameraPhotoPath) };
+                    }
+                } else {
+                    String dataString = data.getDataString();
+                    // cf. https://www.petitmonte.com/java/android_webview_camera.html
+                    if (dataString == null) {
+                        if (mCameraPhotoPath != null) {
+                            results = new Uri[] { Uri.parse(mCameraPhotoPath) };
+                        }
+                    } else {
+                        results = new Uri[] { Uri.parse(dataString) };
+                    }
+                }
+            }
+            mFilePathCallback.onReceiveValue(results);
+            mFilePathCallback = null;
+        } else {
+            if (mUploadMessage == null) {
+                super.onActivityResult(requestCode, resultCode, data);
+                return;
+            }
+            Uri result = null;
+            if (resultCode == Activity.RESULT_OK) {
+                if (data != null) {
+                    result = data.getData();
+                }
+            }
+            mUploadMessage.onReceiveValue(result);
+            mUploadMessage = null;
+        }
     }
 
     public static boolean IsWebViewAvailable() {
@@ -245,6 +315,93 @@ public boolean onJsPrompt(WebView view, String url, String message, String defau
                 public void onGeolocationPermissionsShowPrompt(String origin, Callback callback) {
                     callback.invoke(origin, true, false);
                 }
+
+                // For Android < 3.0 (won't work because we cannot utilize FragmentActivity)
+                // public void openFileChooser(ValueCallback<Uri> uploadFile) {
+                //     openFileChooser(uploadFile, "");
+                // }
+
+                // For 3.0 <= Android < 4.1
+                public void openFileChooser(ValueCallback<Uri> uploadFile, String acceptType) {
+                    openFileChooser(uploadFile, acceptType, "");
+                }
+
+                // For 4.1 <= Android < 5.0
+                public void openFileChooser(ValueCallback<Uri> uploadFile, String acceptType, String capture) {
+                    if (mUploadMessage != null) {
+                        mUploadMessage.onReceiveValue(null);
+                    }
+                    mUploadMessage = uploadFile;
+                    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
+                    intent.addCategory(Intent.CATEGORY_OPENABLE);
+                    intent.setType("*/*");
+                    startActivityForResult(intent, INPUT_FILE_REQUEST_CODE);
+                }
+
+                // For Android 5.0+
+                @Override
+                public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {
+                    // cf. https://github.com/googlearchive/chromium-webview-samples/blob/master/input-file-example/app/src/main/java/inputfilesample/android/chrome/google/com/inputfilesample/MainFragment.java
+                    if (mFilePathCallback != null) {
+                        mFilePathCallback.onReceiveValue(null);
+                    }
+                    mFilePathCallback = filePathCallback;
+
+                    mCameraPhotoPath = null;
+                    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
+                    if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null) {
+                        // Create the File where the photo should go
+                        File photoFile = null;
+                        try {
+                            photoFile = createImageFile();
+                            takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);
+                        } catch (IOException ex) {
+                            // Error occurred while creating the File
+                            Log.e("CWebViewPlugin", "Unable to create Image File", ex);
+                        }
+                        // Continue only if the File was successfully created
+                        if (photoFile != null) {
+                            mCameraPhotoPath = "file:" + photoFile.getAbsolutePath();
+                            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
+                                                       Uri.fromFile(photoFile));
+                        } else {
+                            takePictureIntent = null;
+                        }
+                    }
+
+
+                    Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
+                    contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
+                    contentSelectionIntent.setType("*/*");
+
+                    Intent[] intentArray;
+                    if(takePictureIntent != null) {
+                        intentArray = new Intent[]{takePictureIntent};
+                    } else {
+                        intentArray = new Intent[0];
+                    }
+
+                    Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
+                    chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
+                    // chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
+                    chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
+
+                    startActivityForResult(chooserIntent, INPUT_FILE_REQUEST_CODE);
+
+                    return true;
+                }
+
+                private File createImageFile() throws IOException {
+                    // Create an image file name
+                    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
+                    String imageFileName = "JPEG_" + timeStamp + "_";
+                    File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
+                    File imageFile = File.createTempFile(imageFileName,  /* prefix */
+                                                         ".jpg",         /* suffix */
+                                                         storageDir      /* directory */
+                                                         );
+                    return imageFile;
+                }
             });
 
             mWebViewPlugin = new CWebViewPluginInterface(self, gameObject);
@@ -328,6 +485,7 @@ public boolean shouldOverrideUrlLoading(WebView view, String url) {
                     }
                     if (url.startsWith("http://") || url.startsWith("https://")
                         || url.startsWith("file://") || url.startsWith("javascript:")) {
+                        mWebViewPlugin.call("CallOnStarted", url);
                         // Let webview handle the URL
                         return false;
                     } else if (url.startsWith("unity:")) {

sample/Assets/StreamingAssets/sample.html

@@ -31,7 +31,8 @@ <h1>Hello Unity WebView!</h1>
     <p><a href="javascript:void(0)" onclick="Unity.call('anchor');">[Send Message!]</a></p>
     <form method="get" action="form">
       <input id="input1" type="text" value="hoge" name="msg"/>
-      <input type="submit" value="Send Message!" onclick="Unity.call('form?msg=' + document.getElementById('input1').value); return false;"/>
+      <input type="submit" value="Send Message!" onclick="Unity.call('form?msg=' + document.getElementById('input1').value); return false;"/><br/>
+      <input type="file" name="datafile"/>
     </form>
   </body>
 </html>