[tab_grid] Hack-in new tab FAB action.

BUG=686770 Review-Url: https://codereview.chromium.org/2699223003 Cr-Commit-Position: refs/heads/master@{#451910}
Denger-Network · Feb 22, 2017 · 4f7222a · 4f7222a
1 parent a314137
commit 4f7222a
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diff --git a/ios/clean/chrome/browser/ui/actions/tab_grid_actions.h b/ios/clean/chrome/browser/ui/actions/tab_grid_actions.h
@@ -18,6 +18,9 @@
 @optional
 // Dismisses whatever UI is currently active and shows the tab grid.
 - (void)showTabGrid:(id)sender;
+
+// Create new tab and display.
+- (void)createNewTab:(id)sender;
 @end
 
 #endif  // IOS_CLEAN_CHROME_BROWSER_UI_ACTIONS_TAB_GRID_ACTIONS_H_
diff --git a/ios/clean/chrome/browser/ui/commands/tab_commands.h b/ios/clean/chrome/browser/ui/commands/tab_commands.h
@@ -18,6 +18,9 @@
 
 // Remove tab from the tab model(s) the receiver knows about.
 - (void)closeTabAtIndexPath:(NSIndexPath*)indexPath;
+
+// Create new tab in a tab model the receiver knows about.
+- (void)createNewTabAtIndexPath:(NSIndexPath*)indexPath;
 @end
 
 #endif  // IOS_CLEAN_CHROME_BROWSER_UI_COMMANDS_TAB_COMMANDS_H_
diff --git a/ios/clean/chrome/browser/ui/tab_grid/mdc_floating_button+cr_tab_grid.mm b/ios/clean/chrome/browser/ui/tab_grid/mdc_floating_button+cr_tab_grid.mm
@@ -7,6 +7,7 @@
 #import "ios/chrome/browser/ui/colors/MDCPalette+CrAdditions.h"
 #include "ios/chrome/browser/ui/rtl_geometry.h"
 #include "ios/chrome/grit/ios_strings.h"
+#import "ios/clean/chrome/browser/ui/actions/tab_grid_actions.h"
 #import "ios/third_party/material_components_ios/src/components/Palettes/src/MaterialPalettes.h"
 #include "ui/base/l10n/l10n_util.h"
 
@@ -42,6 +43,9 @@ + (instancetype)cr_tabGridNewTabButton {
                       forState:UIControlStateDisabled];
     [button setAccessibilityLabel:l10n_util::GetNSString(
                                       IDS_IOS_TAB_SWITCHER_CREATE_NEW_TAB)];
+    [button addTarget:nil
+                  action:@selector(createNewTab:)
+        forControlEvents:UIControlEventTouchUpInside];
   }
   return button;
 }

diff --git a/ios/clean/chrome/browser/ui/tab_grid/tab_grid_coordinator.mm b/ios/clean/chrome/browser/ui/tab_grid/tab_grid_coordinator.mm
@@ -114,6 +114,13 @@ - (void)closeTabAtIndexPath:(NSIndexPath*)indexPath {
   _webStates.erase(_webStates.begin() + index);
 }
 
+- (void)createNewTabAtIndexPath:(NSIndexPath*)indexPath {
+  web::WebState::CreateParams webStateCreateParams(self.browserState);
+  std::unique_ptr<web::WebState> webState =
+      web::WebState::Create(webStateCreateParams);
+  _webStates.push_back(std::move(webState));
+}
+
 #pragma mark - TabGridCommands
 
 - (void)showTabGrid {

diff --git a/ios/clean/chrome/browser/ui/tab_grid/tab_grid_view_controller.mm b/ios/clean/chrome/browser/ui/tab_grid/tab_grid_view_controller.mm
@@ -145,6 +145,19 @@ - (void)showTabGrid:(id)sender {
   [self.tabGridCommandHandler showTabGrid];
 }
 
+- (void)createNewTab:(id)sender {
+  // PLACEHOLDER: The new WebStateList data structure will have implications
+  // on how new tabs are created.
+  NSInteger index = [self.grid numberOfItemsInSection:0];
+  NSIndexPath* indexPath = [NSIndexPath indexPathForItem:index inSection:0];
+  auto updateBlock = ^{
+    [self.tabCommandHandler createNewTabAtIndexPath:indexPath];
+    [self.tabCommandHandler showTabAtIndexPath:indexPath];
+    [self.grid insertItemsAtIndexPaths:@[ indexPath ]];
+  };
+  [self.grid performBatchUpdates:updateBlock completion:nil];
+}
+
 #pragma mark - SessionCellDelegate
 
 - (TabSwitcherCache*)tabSwitcherCache {