[Android] Upstream Modal Dialogs functionality

chrome/browser/ui/android/javascript_app_modal_dialog_android.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/ui/app_modal_dialogs/native_app_modal_dialog.h"
+#include "chrome/browser/ui/android/javascript_app_modal_dialog_android.h"
 
-#include "base/logging.h"
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/utf_string_conversions.h"
+
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/ui/app_modal_dialogs/javascript_app_modal_dialog.h"
+#include "content/public/browser/android/content_view_core.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/common/javascript_message_type.h"
+#include "jni/JavascriptAppModalDialog_jni.h"
+
+using base::android::AttachCurrentThread;
+using base::android::ConvertUTF16ToJavaString;
+using base::android::ScopedJavaLocalRef;
+using content::BrowserThread;
+using content::ContentViewCore;
 
 // static
 NativeAppModalDialog* NativeAppModalDialog::CreateNativeJavaScriptPrompt(
     JavaScriptAppModalDialog* dialog,
     gfx::NativeWindow parent_window) {
-  NOTIMPLEMENTED() << "TODO(benm): Upstream JsModalDialogAndroid";
-  return NULL;
+  return new JavascriptAppModalDialogAndroid(AttachCurrentThread(),
+                                  dialog, parent_window);
 }
+
+JavascriptAppModalDialogAndroid::JavascriptAppModalDialogAndroid(
+    JNIEnv* env,
+    JavaScriptAppModalDialog* dialog,
+    gfx::NativeWindow parent)
+    : dialog_(dialog),
+      parent_jobject_weak_ref(env, parent->GetJavaObject().obj()) {
+}
+
+JavascriptAppModalDialogAndroid::~JavascriptAppModalDialogAndroid() {
+  JNIEnv* env = AttachCurrentThread();
+  // In case the dialog is still displaying, tell it to close itself.
+  // This can happen if you trigger a dialog but close the Tab before it's
+  // shown, and then accept the dialog.
+  if (!dialog_jobject_.is_null())
+    Java_JavascriptAppModalDialog_dismiss(env, dialog_jobject_.obj());
+}
+
+int JavascriptAppModalDialogAndroid::GetAppModalDialogButtons() const {
+  NOTIMPLEMENTED();
+  return 0;
+}
+
+void JavascriptAppModalDialogAndroid::ShowAppModalDialog() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  JNIEnv* env = AttachCurrentThread();
+  if (parent_jobject_weak_ref.get(env).is_null()) {
+    CancelAppModalDialog();
+    return;
+  }
+
+  // Keep a strong ref to the ContentViewCore while we make the call
+  // to java to display the dialog.
+  ScopedJavaLocalRef<jobject> content_view_core =
+      ContentViewCore::FromWebContents(dialog_->web_contents())
+      ->GetJavaObject();
+  if (!content_view_core.obj())
+    return;
+
+  ScopedJavaLocalRef<jobject> dialog_object;
+  ScopedJavaLocalRef<jstring> title =
+      ConvertUTF16ToJavaString(env, dialog_->title());
+  ScopedJavaLocalRef<jstring> message =
+      ConvertUTF16ToJavaString(env, dialog_->message_text());
+
+  switch (dialog_->javascript_message_type()) {
+    case content::JAVASCRIPT_MESSAGE_TYPE_ALERT: {
+      dialog_object = Java_JavascriptAppModalDialog_createAlertDialog(env,
+          title.obj(), message.obj(),
+          dialog_->display_suppress_checkbox());
+      break;
+    }
+    case content::JAVASCRIPT_MESSAGE_TYPE_CONFIRM: {
+      if (dialog_->is_before_unload_dialog()) {
+        dialog_object = Java_JavascriptAppModalDialog_createBeforeUnloadDialog(
+            env, title.obj(), message.obj(), dialog_->is_reload(),
+            dialog_->display_suppress_checkbox());
+      } else {
+        dialog_object = Java_JavascriptAppModalDialog_createConfirmDialog(env,
+            title.obj(), message.obj(),
+            dialog_->display_suppress_checkbox());
+      }
+      break;
+    }
+    case content::JAVASCRIPT_MESSAGE_TYPE_PROMPT: {
+      ScopedJavaLocalRef<jstring> default_prompt_text =
+          ConvertUTF16ToJavaString(env, dialog_->default_prompt_text());
+      dialog_object = Java_JavascriptAppModalDialog_createPromptDialog(env,
+          title.obj(), message.obj(),
+          dialog_->display_suppress_checkbox(), default_prompt_text.obj());
+      break;
+    }
+    default:
+      NOTREACHED();
+  }
+
+  // Keep a ref to the java side object until we get a confirm or cancel.
+  dialog_jobject_.Reset(dialog_object);
+
+  Java_JavascriptAppModalDialog_showJavascriptAppModalDialog(env,
+      dialog_object.obj(), content_view_core.obj(),
+      reinterpret_cast<jint>(this));
+}
+
+void JavascriptAppModalDialogAndroid::ActivateAppModalDialog() {
+  ShowAppModalDialog();
+}
+
+void JavascriptAppModalDialogAndroid::CloseAppModalDialog() {
+  CancelAppModalDialog();
+}
+
+void JavascriptAppModalDialogAndroid::AcceptAppModalDialog() {
+  string16 prompt_text;
+  dialog_->OnAccept(prompt_text, false);
+  delete this;
+}
+
+void JavascriptAppModalDialogAndroid::DidAcceptAppModalDialog(
+    JNIEnv* env, jobject, jstring prompt, bool should_suppress_js_dialogs) {
+  string16 prompt_text = base::android::ConvertJavaStringToUTF16(env, prompt);
+  dialog_->OnAccept(prompt_text, should_suppress_js_dialogs);
+  delete this;
+}
+
+void JavascriptAppModalDialogAndroid::CancelAppModalDialog() {
+  dialog_->OnCancel(false);
+  delete this;
+}
+
+void JavascriptAppModalDialogAndroid::DidCancelAppModalDialog(
+    JNIEnv* env, jobject, bool should_suppress_js_dialogs) {
+  dialog_->OnCancel(should_suppress_js_dialogs);
+  delete this;
+}
+
+// static
+bool JavascriptAppModalDialogAndroid::RegisterJavascriptAppModalDialog(
+    JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}