Foundations for Print Preview and Setup

Create the foundations of implementing a tab for printing should be in the form of:
print:http://www.google.com
I have followed similar approach as what has been done with view-source: and chrome-extension:

BUG=173, 947
TEST=none

Review URL: http://codereview.chromium.org/150207

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@19906 0039d316-1c4b-4281-b951-d872f2087c98

10 files changed, 65 insertions, 14 deletions

diff --git a/chrome/browser/autocomplete/autocomplete.cc b/chrome/browser/autocomplete/autocomplete.cc
index 7678fc7..7b7b1c2 100644
--- a/chrome/browser/autocomplete/autocomplete.cc
+++ b/chrome/browser/autocomplete/autocomplete.cc
@@ -125,7 +125,8 @@ AutocompleteInput::Type AutocompleteInput::Parse(
     // should still claim to handle them.
     if (LowerCaseEqualsASCII(parsed_scheme, chrome::kViewSourceScheme) ||
         LowerCaseEqualsASCII(parsed_scheme, chrome::kJavaScriptScheme) ||
-        LowerCaseEqualsASCII(parsed_scheme, chrome::kDataScheme))
+        LowerCaseEqualsASCII(parsed_scheme, chrome::kDataScheme) ||
+        LowerCaseEqualsASCII(parsed_scheme, chrome::kPrintScheme))
       return URL;
 
     // Finally, check and see if the user has explicitly opened this scheme as
@@ -257,11 +258,12 @@ void AutocompleteInput::ParseForEmphasizeComponents(
   *host = parts.host;
 
   int after_scheme_and_colon = parts.scheme.end() + 1;
-  // For the view-source scheme, we should emphasize the scheme and host of
-  // the URL qualified by the view-source prefix.
-  if (LowerCaseEqualsASCII(scheme_str, chrome::kViewSourceScheme) &&
+  // For the view-source and print schemes, we should emphasize the scheme and
+  // host of the URL qualified by the scheme prefix.
+  if ((LowerCaseEqualsASCII(scheme_str, chrome::kViewSourceScheme) ||
+       LowerCaseEqualsASCII(scheme_str, chrome::kPrintScheme)) &&
       (static_cast<int>(text.length()) > after_scheme_and_colon)) {
-    // Obtain the URL prefixed by view-source and parse it.
+    // Obtain the URL prefixed by scheme and parse it.
     std::wstring real_url(text.substr(after_scheme_and_colon));
     url_parse::Parsed real_parts;
     AutocompleteInput::Parse(real_url, desired_tld, &real_parts, NULL);
diff --git a/chrome/browser/child_process_security_policy.cc b/chrome/browser/child_process_security_policy.cc
index b386e8e..b3ba538 100644
--- a/chrome/browser/child_process_security_policy.cc
+++ b/chrome/browser/child_process_security_policy.cc
@@ -98,6 +98,7 @@ ChildProcessSecurityPolicy::ChildProcessSecurityPolicy() {
   RegisterPseudoScheme(chrome::kAboutScheme);
   RegisterPseudoScheme(chrome::kJavaScriptScheme);
   RegisterPseudoScheme(chrome::kViewSourceScheme);
+  RegisterPseudoScheme(chrome::kPrintScheme);
 }
 
 ChildProcessSecurityPolicy::~ChildProcessSecurityPolicy() {
@@ -170,10 +171,11 @@ void ChildProcessSecurityPolicy::GrantRequestURL(int renderer_id, const GURL& ur
     return;  // The scheme has already been white-listed for every renderer.
 
   if (IsPseudoScheme(url.scheme())) {
-    // The view-source scheme is a special case of a pseudo URL that eventually
-    // results in requesting its embedded URL.
-    if (url.SchemeIs(chrome::kViewSourceScheme)) {
-      // URLs with the view-source scheme typically look like:
+    // The view-source and print schemes are a special case of a pseudo URL that
+    // eventually results in requesting its embedded URL.
+    if (url.SchemeIs(chrome::kViewSourceScheme) ||
+        url.SchemeIs(chrome::kPrintScheme)) {
+      // URLs with the view-source and print schemes typically look like:
       //   view-source:http://www.google.com/a
       // In order to request these URLs, the renderer needs to be able to
       // request the embedded URL.
@@ -254,9 +256,10 @@ bool ChildProcessSecurityPolicy::CanRequestURL(int renderer_id, const GURL& url)
   if (IsPseudoScheme(url.scheme())) {
     // There are a number of special cases for pseudo schemes.
 
-    if (url.SchemeIs(chrome::kViewSourceScheme)) {
-      // A view-source URL is allowed if the renderer is permitted to request
-      // the embedded URL.
+    if (url.SchemeIs(chrome::kViewSourceScheme) ||
+        url.SchemeIs(chrome::kPrintScheme)) {
+      // View-source and print URL's are allowed if the renderer is permitted
+      // to request the embedded URL.
       return CanRequestURL(renderer_id, GURL(url.path()));
     }
 
diff --git a/chrome/browser/dom_ui/dom_ui_factory.cc b/chrome/browser/dom_ui/dom_ui_factory.cc
index 8827c02..8ff6d03 100644
--- a/chrome/browser/dom_ui/dom_ui_factory.cc
+++ b/chrome/browser/dom_ui/dom_ui_factory.cc
@@ -9,6 +9,7 @@
 #include "chrome/browser/dom_ui/history_ui.h"
 #include "chrome/browser/dom_ui/html_dialog_ui.h"
 #include "chrome/browser/dom_ui/new_tab_ui.h"
+#include "chrome/browser/dom_ui/print_ui.h"
 #include "chrome/browser/extensions/extensions_ui.h"
 #include "chrome/browser/extensions/extension_dom_ui.h"
 #include "chrome/common/url_constants.h"
@@ -41,6 +42,12 @@ static bool CreateDOMUI(const GURL& url, TabContents* tab_contents,
     return true;
   }
 
+  if (url.SchemeIs(chrome::kPrintScheme)) {
+    if (new_ui)
+      *new_ui = new PrintUI(tab_contents);
+    return true;
+  }
+
 #ifdef CHROME_PERSONALIZATION
   if (Personalization::NeedsDOMUI(url)) {
     if (new_ui)
diff --git a/chrome/browser/dom_ui/print_ui.cc b/chrome/browser/dom_ui/print_ui.cc
new file mode 100644
index 0000000..973e5c7
--- /dev/null
+++ b/chrome/browser/dom_ui/print_ui.cc
@@ -0,0 +1,15 @@
+// Copyright (c) 2009 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/dom_ui/print_ui.h"
+
+///////////////////////////////////////////////////////////////////////////////
+//
+// PrintUI
+//
+///////////////////////////////////////////////////////////////////////////////
+
+PrintUI::PrintUI(TabContents* contents) : DOMUI(contents) {
+  NOTIMPLEMENTED();
+}
diff --git a/chrome/browser/dom_ui/print_ui.h b/chrome/browser/dom_ui/print_ui.h
new file mode 100644
index 0000000..020b3f1
--- /dev/null
+++ b/chrome/browser/dom_ui/print_ui.h
@@ -0,0 +1,18 @@
+// Copyright (c) 2009 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.
+
+#ifndef CHROME_BROWSER_DOM_UI_PRINT_UI_H_
+#define CHROME_BROWSER_DOM_UI_PRINT_UI_H_
+
+#include "chrome/browser/dom_ui/dom_ui.h"
+
+class PrintUI : public DOMUI {
+ public:
+  explicit PrintUI(TabContents* contents);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(PrintUI);
+};
+
+#endif  // CHROME_BROWSER_DOM_UI_PRINT_UI_H_
diff --git a/chrome/browser/history/history.cc b/chrome/browser/history/history.cc
index 8c314067..aa004b4 100644
--- a/chrome/browser/history/history.cc
+++ b/chrome/browser/history/history.cc
@@ -593,7 +593,8 @@ bool HistoryService::CanAddURL(const GURL& url) const {
   if (url.SchemeIs(chrome::kJavaScriptScheme) ||
       url.SchemeIs(chrome::kChromeUIScheme) ||
       url.SchemeIs(chrome::kViewSourceScheme) ||
-      url.SchemeIs(chrome::kChromeInternalScheme))
+      url.SchemeIs(chrome::kChromeInternalScheme) ||
+      url.SchemeIs(chrome::kPrintScheme))
     return false;
 
   if (url.SchemeIs(chrome::kAboutScheme)) {
diff --git a/chrome/chrome.gyp b/chrome/chrome.gyp
index 5533fed..04ce09e 100644
--- a/chrome/chrome.gyp
+++ b/chrome/chrome.gyp
@@ -851,6 +851,8 @@
         'browser/dom_ui/html_dialog_ui.h',
         'browser/dom_ui/new_tab_ui.cc',
         'browser/dom_ui/new_tab_ui.h',
+        'browser/dom_ui/print_ui.cc',
+        'browser/dom_ui/print_ui.h',
         'browser/dom_ui/shown_sections_handler.cc',
         'browser/dom_ui/shown_sections_handler.h',
         'browser/dom_ui/tips_handler.cc',
diff --git a/chrome/common/url_constants.cc b/chrome/common/url_constants.cc
index 1f47987..eb3f78f 100644
--- a/chrome/common/url_constants.cc
+++ b/chrome/common/url_constants.cc
@@ -21,6 +21,7 @@ const char kHttpScheme[] = "http";
 const char kHttpsScheme[] = "https";
 const char kJavaScriptScheme[] = "javascript";
 const char kMailToScheme[] = "mailto";
+const char kPrintScheme[] = "print";
 const char kUserScriptScheme[] = "chrome-user-script";
 const char kViewCacheScheme[] = "view-cache";
 const char kViewSourceScheme[] = "view-source";
diff --git a/chrome/common/url_constants.h b/chrome/common/url_constants.h
index 69d6c54..12d7651 100644
--- a/chrome/common/url_constants.h
+++ b/chrome/common/url_constants.h
@@ -22,6 +22,7 @@ extern const char kHttpScheme[];
 extern const char kHttpsScheme[];
 extern const char kJavaScriptScheme[];
 extern const char kMailToScheme[];
+extern const char kPrintScheme[];
 extern const char kUserScriptScheme[];
 extern const char kViewCacheScheme[];
 extern const char kViewSourceScheme[];
diff --git a/chrome/renderer/render_view.cc b/chrome/renderer/render_view.cc
index 5b98519..8e6fab8 100644
--- a/chrome/renderer/render_view.cc
+++ b/chrome/renderer/render_view.cc
@@ -1485,7 +1485,8 @@ WindowOpenDisposition RenderView::DispositionForNavigationAction(
     if (BindingsPolicy::is_dom_ui_enabled(enabled_bindings_) ||
         BindingsPolicy::is_extension_enabled(enabled_bindings_) ||
         frame->GetInViewSourceMode() ||
-        url.SchemeIs(chrome::kViewSourceScheme)) {
+        url.SchemeIs(chrome::kViewSourceScheme) ||
+        url.SchemeIs(chrome::kPrintScheme)) {
       OpenURL(webview, url, GURL(), disposition);
       return IGNORE_ACTION;  // Suppress the load here.
     }