Add picker view for Web Share Target.

chrome/browser/webshare/share_service_impl.cc

 // Copyright 2016 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/webshare/share_service_impl.h"
 
 #include <algorithm>
 #include <functional>
 #include <utility>
 
 #include "base/strings/string_util.h"
+#include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
+#include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "net/base/escape.h"
 
 namespace {
 
 // Determines whether a character is allowed in a URL template placeholder.
 bool IsIdentifier(char c) {
@@ skipping 93 matching lines @@
   Browser* browser = BrowserList::GetInstance()->GetLastActive();
   chrome::AddTabAt(browser, target_url,
                    browser->tab_strip_model()->active_index() + 1, true);
 #endif
 }
 
 void ShareServiceImpl::Share(const std::string& title,
                              const std::string& text,
                              const GURL& share_url,
                              const ShareCallback& callback) {
+  // TODO(constantina): Replace hard-coded name with the registered target list.

[constantina, 2017/01/20 05:23:44]

👍

+  constexpr wchar_t kTargetName[] = L"Web Share Target Test App";
+  std::vector<base::string16> targets{base::WideToUTF16(kTargetName)};
+
+  // TODO(mgiuca): Get the browser window as |parent_window|.
+  gfx::NativeWindow browser_window = nullptr;
+  chrome::ShowWebShareTargetPickerDialog(
+      browser_window, targets,
+      base::Bind(&ShareServiceImpl::OnPickerClosed, base::Unretained(this),
+                 title, text, share_url, callback));
+}
+
+void ShareServiceImpl::OnPickerClosed(const std::string& title,
+                                      const std::string& text,
+                                      const GURL& share_url,
+                                      const ShareCallback& callback,
+                                      bool picked) {
+  if (!picked) {

[constantina, 2017/01/20 05:23:44]

👍

+    callback.Run(base::Optional<std::string>("Share was cancelled"));
+    return;
+  }
+
   // TODO(constantina): replace hard-coded URL with one from user-chosen site.
   constexpr char kUrlBase[] = "https://wicg.github.io/web-share-target/";
   constexpr char kUrlTemplate[] =
       "demos/sharetarget.html?title={title}&text={text}&url={url}";
 
   std::string url_template_filled;
   if (!ReplacePlaceholders(kUrlTemplate, title, text, share_url,
                            &url_template_filled)) {
     callback.Run(base::Optional<std::string>(
         "Error: unable to replace placeholders in url template"));
     return;
   }
 
   GURL target_url(kUrlBase + url_template_filled);
   if (!target_url.is_valid()) {
     callback.Run(base::Optional<std::string>(
         "Error: url of share target is not a valid url."));
     return;
   }
   OpenTargetURL(target_url);
 
   callback.Run(base::nullopt);
 }