Implementation of DoURIActionWithKeyboardModifiers API

Support for opening a link in new tab/window exists using mouse. But
after setting focus over link by pressing Tab key, we do not have the
provision to open the link in new tab/window using keyboard shortcut.
This new API carries keyboard modifier value whenever URI action
needs to be performed.

Unit tests are added to validate the newly added API.

Bug: chromium:994500
Change-Id: Id7936c0ec42115f92a790f4d469f65c6194f9d1b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2154432
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Ian Prest <iapres@microsoft.com>
Commit-Queue: Badhri Ravikumar <bravi@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#760239}

pdf/pdfium/pdfium_form_filler.cc

@@ -51,6 +51,8 @@ PDFiumFormFiller::PDFiumFormFiller(PDFiumEngine* engine, bool enable_javascript)
   FPDF_FORMFILLINFO::FFI_DoURIAction = Form_DoURIAction;
   FPDF_FORMFILLINFO::FFI_DoGoToAction = Form_DoGoToAction;
   FPDF_FORMFILLINFO::FFI_OnFocusChange = Form_OnFocusChange;
+  FPDF_FORMFILLINFO::FFI_DoURIActionWithKeyboardModifier =
+      Form_DoURIActionWithKeyboardModifier;
 #if defined(PDF_ENABLE_XFA)
   FPDF_FORMFILLINFO::xfa_disabled = false;
   FPDF_FORMFILLINFO::FFI_EmailTo = Form_EmailTo;
@@ -311,6 +313,24 @@ void PDFiumFormFiller::Form_DoGoToAction(FPDF_FORMFILLINFO* param,
   engine->ScrollToPage(page_index);
 }
 
+// static
+void PDFiumFormFiller::Form_DoURIActionWithKeyboardModifier(
+    FPDF_FORMFILLINFO* param,
+    FPDF_BYTESTRING uri,
+    int modifiers) {
+  PDFiumEngine* engine = GetEngine(param);
+  bool middle_button = !!(modifiers & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN);
+  bool alt_key = !!(modifiers & PP_INPUTEVENT_MODIFIER_ALTKEY);
+  bool ctrl_key = !!(modifiers & PP_INPUTEVENT_MODIFIER_CONTROLKEY);
+  bool meta_key = !!(modifiers & PP_INPUTEVENT_MODIFIER_METAKEY);
+  bool shift_key = !!(modifiers & PP_INPUTEVENT_MODIFIER_SHIFTKEY);
+
+  WindowOpenDisposition disposition = ui::DispositionFromClick(
+      middle_button, alt_key, ctrl_key, meta_key, shift_key);
+
+  engine->client_->NavigateTo(std::string(uri), disposition);
+}
+
 #if defined(PDF_ENABLE_XFA)
 
 // static

pdf/pdfium/pdfium_form_filler.h

@@ -69,6 +69,9 @@ class PDFiumFormFiller : public FPDF_FORMFILLINFO, public IPDF_JSPLATFORM {
                                 int zoom_mode,
                                 float* position_array,
                                 int size_of_array);
+  static void Form_DoURIActionWithKeyboardModifier(FPDF_FORMFILLINFO* param,
+                                                   FPDF_BYTESTRING uri,
+                                                   int modifiers);
 
 #if defined(PDF_ENABLE_XFA)
   static void Form_EmailTo(FPDF_FORMFILLINFO* param,

pdf/pdfium/pdfium_form_filler_unittest.cc

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "build/build_config.h"
 #include "pdf/pdfium/pdfium_engine.h"
 #include "pdf/pdfium/pdfium_test_base.h"
 #include "pdf/test/test_client.h"
@@ -25,6 +26,7 @@ class FormFillerTestClient : public TestClient {
   // Mock PDFEngine::Client methods.
   MOCK_METHOD1(ScrollToX, void(int));
   MOCK_METHOD2(ScrollToY, void(int, bool));
+  MOCK_METHOD2(NavigateTo, void(const std::string&, WindowOpenDisposition));
 };
 
 }  // namespace
@@ -43,8 +45,67 @@ class FormFillerTest : public PDFiumTestBase {
     engine->form_filler_.Form_OnFocusChange(&engine->form_filler_, annot,
                                             page_index);
   }
+
+  void TriggerDoURIActionWithKeyboardModifier(PDFiumEngine* engine,
+                                              FPDF_BYTESTRING uri,
+                                              int modifiers) {
+    ASSERT_TRUE(engine);
+    engine->form_filler_.Form_DoURIActionWithKeyboardModifier(
+        &engine->form_filler_, uri, modifiers);
+  }
 };
 
+TEST_F(FormFillerTest, DoURIActionWithKeyboardModifier) {
+  FormFillerTestClient client;
+  std::unique_ptr<PDFiumEngine> engine = InitializeEngine(
+      &client, FILE_PATH_LITERAL("annotation_form_fields.pdf"));
+  ASSERT_TRUE(engine);
+
+  const char kUri[] = "https://www.google.com/";
+  {
+    InSequence sequence;
+    EXPECT_CALL(client, NavigateTo(kUri, WindowOpenDisposition::CURRENT_TAB))
+        .Times(1);
+    EXPECT_CALL(client, NavigateTo(kUri, WindowOpenDisposition::SAVE_TO_DISK))
+        .Times(1);
+    EXPECT_CALL(client,
+                NavigateTo(kUri, WindowOpenDisposition::NEW_BACKGROUND_TAB))
+        .Times(1);
+    EXPECT_CALL(client, NavigateTo(kUri, WindowOpenDisposition::NEW_WINDOW))
+        .Times(1);
+    EXPECT_CALL(client,
+                NavigateTo(kUri, WindowOpenDisposition::NEW_FOREGROUND_TAB))
+        .Times(1);
+    EXPECT_CALL(client,
+                NavigateTo(kUri, WindowOpenDisposition::NEW_BACKGROUND_TAB))
+        .Times(1);
+    EXPECT_CALL(client,
+                NavigateTo(kUri, WindowOpenDisposition::NEW_FOREGROUND_TAB))
+        .Times(1);
+  }
+
+#if defined(OS_MACOSX)
+#define modifier_key PP_INPUTEVENT_MODIFIER_METAKEY;
+#else
+#define modifier_key PP_INPUTEVENT_MODIFIER_CONTROLKEY
+#endif
+
+  int modifiers = 0;
+  TriggerDoURIActionWithKeyboardModifier(engine.get(), kUri, modifiers);
+  modifiers = PP_INPUTEVENT_MODIFIER_ALTKEY;
+  TriggerDoURIActionWithKeyboardModifier(engine.get(), kUri, modifiers);
+  modifiers = modifier_key;
+  TriggerDoURIActionWithKeyboardModifier(engine.get(), kUri, modifiers);
+  modifiers = PP_INPUTEVENT_MODIFIER_SHIFTKEY;
+  TriggerDoURIActionWithKeyboardModifier(engine.get(), kUri, modifiers);
+  modifiers |= modifier_key;
+  TriggerDoURIActionWithKeyboardModifier(engine.get(), kUri, modifiers);
+  modifiers = PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN;
+  TriggerDoURIActionWithKeyboardModifier(engine.get(), kUri, modifiers);
+  modifiers |= PP_INPUTEVENT_MODIFIER_SHIFTKEY;
+  TriggerDoURIActionWithKeyboardModifier(engine.get(), kUri, modifiers);
+}
+
 TEST_F(FormFillerTest, FormOnFocusChange) {
   struct {
     // Initial scroll position of the document.