Implement window.print() on Android

printing/printing_context_android.cc

 // Copyright 2013 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 "printing/printing_context_android.h"
 
 #include <vector>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 64 matching lines @@
     : PrintingContext(delegate) {
   // The constructor is run in the IO thread.
 }
 
 PrintingContextAndroid::~PrintingContextAndroid() {
 }
 
 void PrintingContextAndroid::AskUserForSettings(
     int max_pages,
     bool has_selection,
+    bool is_scripted,
     const PrintSettingsCallback& callback) {
   // This method is always run in the UI thread.
   callback_ = callback;
 
   JNIEnv* env = base::android::AttachCurrentThread();
   if (j_printing_context_.is_null()) {
     j_printing_context_.Reset(Java_PrintingContext_create(
         env,
         reinterpret_cast<intptr_t>(this)));
   }
 
-  Java_PrintingContext_pageCountEstimationDone(env,
-                                               j_printing_context_.obj(),
-                                               max_pages);
+  if (is_scripted) {
+    Java_PrintingContext_showPrintDialog(env, j_printing_context_.obj());
+  } else {
+    Java_PrintingContext_pageCountEstimationDone(env,
+                                                 j_printing_context_.obj(),
+                                                 max_pages);
+  }
 }
 
 void PrintingContextAndroid::AskUserForSettingsReply(JNIEnv* env,
                                                      jobject obj,
                                                      jboolean success) {
   if (!success) {
     // TODO(cimamoglu): Differentiate between FAILED And CANCEL.
     callback_.Run(FAILED);
     return;
   }
@@ skipping 16 matching lines @@
   int dpi = Java_PrintingContext_getDpi(env, j_printing_context_.obj());
   int width = Java_PrintingContext_getWidth(env, j_printing_context_.obj());
   int height = Java_PrintingContext_getHeight(env, j_printing_context_.obj());
   width = Round(ConvertUnitDouble(width, kInchToMil, 1.0) * dpi);
   height = Round(ConvertUnitDouble(height, kInchToMil, 1.0) * dpi);
   SetSizes(&settings_, dpi, width, height);
 
   callback_.Run(OK);
 }
 
+void PrintingContextAndroid::ShowSystemDialogDone(JNIEnv* env,
+                                                     jobject obj) {

[Bernhard Bauer, 2014/12/15 09:38:02]

Nit: Align

[dgn, 2014/12/15 10:27:06]

Done.

+  // Settings are not updated, callback is called only to unblock javascript.
+  callback_.Run(CANCEL);
+}
+
 PrintingContext::Result PrintingContextAndroid::UseDefaultSettings() {
   DCHECK(!in_print_job_);
 
   ResetSettings();
   settings_.set_dpi(kDefaultPdfDpi);
   gfx::Size physical_size = GetPdfPaperSizeDeviceUnits();
   SetSizes(&settings_, kDefaultPdfDpi, physical_size.width(),
            physical_size.height());
   return OK;
 }
@@ skipping 94 matching lines @@
   // Intentional No-op.
   return NULL;
 }
 
 // static
 bool PrintingContextAndroid::RegisterPrintingContext(JNIEnv* env) {
    return RegisterNativesImpl(env);
 }
 
 }  // namespace printing