[AiS] changing mac omnibox suggestions form NSMatrix to NSTableView

chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.mm

 // Copyright (c) 2012 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/ui/cocoa/omnibox/omnibox_popup_view_mac.h"
 
 #include <cmath>
 
 #include "base/stl_util.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 65 matching lines @@
   DCHECK([NSThread isMainThread]);
   const AutocompleteResult& result = GetResult();
   const size_t start_match = result.ShouldHideTopMatch() ? 1 : 0;
   const size_t rows = result.size() - start_match;
   if (rows == 0) {
     [[popup_ parentWindow] removeChildWindow:popup_];
     [popup_ orderOut:nil];
 
     // Break references to |this| because the popup may not be
     // deallocated immediately.
-    [matrix_ setDelegate:nil];
+    [matrix_ setObserver:NULL];
     matrix_.reset();
 
     popup_.reset(nil);
 
     target_popup_frame_ = NSZeroRect;
 
     return;
   }
 
   CreatePopupIfNeeded();
 
-  // Calculate the width of the matrix based on backing out the popup's border
-  // from the width of the field.
-  const CGFloat matrix_width = NSWidth([field_ bounds]);
-  DCHECK_GT(matrix_width, 0.0);
-
   // Load the results into the popup's matrix.
   DCHECK_GT(rows, 0U);
-  [matrix_ renewRows:rows columns:1];
+  NSMutableArray* array = [NSMutableArray array];
+  CGFloat popupHeight = 0;
+  NSRect cellRect = NSZeroRect;
+  cellRect.size.width = NSWidth([field_ bounds]);
   CGFloat max_match_contents_width = 0.0f;
   CGFloat contents_offset = -1.0f;
   for (size_t ii = 0; ii < rows; ++ii) {
-    OmniboxPopupCell* cell = [matrix_ cellAtRow:ii column:0];
     const AutocompleteMatch& match = GetResult().match_at(ii + start_match);
-    [cell setImage:ImageForMatch(match)];
-    [cell setMatch:match];
+    base::scoped_nsobject<OmniboxPopupCellData> cellData(
+        [[OmniboxPopupCellData alloc] initWithMatch:match]);
+    cellRect.origin.y = popupHeight;
+    NSImage* image = ImageForMatch(match);
+    cellRect.size.height = [image size].height + kCellHeightAdjust;
+    [cellData setRect:cellRect];
+    [cellData setImage:image];
+    [array addObject:cellData];
+    popupHeight += cellRect.size.height;
     if (match.type == AutocompleteMatchType::SEARCH_SUGGEST_TAIL) {
-      max_match_contents_width = std::max(max_match_contents_width,
-                                           [cell getMatchContentsWidth]);
+      max_match_contents_width =
+          std::max(max_match_contents_width, [cellData getMatchContentsWidth]);
       if (contents_offset < 0.0f) {
         contents_offset = [OmniboxPopupCell computeContentsOffset:match];
       }
-      [cell setContentsOffset:contents_offset];
+      [cellData setContentsOffset:contents_offset];
     }
   }
 
   for (size_t ii = 0; ii < rows; ++ii) {
-    OmniboxPopupCell* cell = [matrix_ cellAtRow:ii column:0];
-    [cell setMaxMatchContentsWidth:max_match_contents_width];
+    OmniboxPopupCellData* cellData = [array objectAtIndex:ii];
+    [cellData setMaxMatchContentsWidth:max_match_contents_width];
   }
 
-  // Set the cell size to fit a line of text in the cell's font.  All
-  // cells should use the same font and each should layout in one
-  // line, so they should all be about the same height.
-  const NSSize cell_size = [[matrix_ cellAtRow:0 column:0] cellSize];
-  DCHECK_GT(cell_size.height, 0.0);
-  const CGFloat cell_height = cell_size.height + kCellHeightAdjust;
-  [matrix_ setCellSize:NSMakeSize(matrix_width, cell_height)];
+  [matrix_ setDataArray:array];
+  [matrix_ reloadData];
+  popupHeight += [matrix_ intercellSpacing].height * (rows - 1);
 
   // Update the selection before placing (and displaying) the window.
   PaintUpdatesNow();
 
   // Calculate the matrix size manually rather than using -sizeToCells
   // because actually resizing the matrix messed up the popup size
   // animation.
   DCHECK_EQ([matrix_ intercellSpacing].height, 0.0);
-  PositionPopup(rows * cell_height);
+  PositionPopup(popupHeight);
 }
 
 gfx::Rect OmniboxPopupViewMac::GetTargetBounds() {
   // Flip the coordinate system before returning.
   NSScreen* screen = [[NSScreen screens] objectAtIndex:0];
   NSRect monitor_frame = [screen frame];
   gfx::Rect bounds(NSRectToCGRect(target_popup_frame_));
   bounds.set_y(monitor_frame.size.height - bounds.y() - bounds.height());
   return bounds;
 }
 
 // This is only called by model in SetSelectedLine() after updating
 // everything.  Popup should already be visible.
 void OmniboxPopupViewMac::PaintUpdatesNow() {
   size_t start_match = model_->result().ShouldHideTopMatch() ? 1 : 0;
-  if (start_match > model_->selected_line()) {
-    [matrix_ deselectAllCells];
-  } else {
-    [matrix_ selectCellAtRow:model_->selected_line() - start_match column:0];
+  NSIndexSet* indexSet = [NSIndexSet indexSet];
+  if (start_match <= model_->selected_line()) {
+    indexSet =
+        [NSIndexSet indexSetWithIndex:model_->selected_line() - start_match];
   }

[shrike, 2015/05/14 18:02:39]

Seems like above you'd want to say

    NSIndexSet* indexSet = nil;

and then here say

} else {
  indexSet = [NSIndexSet indexSet];
}

to avoid creating and throwing away an index set if the condition is true?

[dschuyler, 2015/05/14 22:28:20]

Done.

[Scott Hess - ex-Googler, 2015/05/15 00:09:38]

Double-check that -selectRowIndexes: allows for nil there.

[dschuyler, 2015/05/15 21:52:03]

Passing nil to selectRowIndexes doesn't appear to be harmful (based on testing).
 The docs are not clear on it that I've seen.  Though it also looks like that
should not happen (barring out of memory) as both if and else set the value.

-
+  [matrix_ selectRowIndexes:indexSet byExtendingSelection:NO];
 }
 
 void OmniboxPopupViewMac::OnMatrixRowSelected(OmniboxPopupMatrix* matrix,
                                               size_t row) {
   size_t start_match = model_->result().ShouldHideTopMatch() ? 1 : 0;
   model_->SetSelectedLine(row + start_match, false, false);
 }
 
 void OmniboxPopupViewMac::OnMatrixRowClicked(OmniboxPopupMatrix* matrix,
                                              size_t row) {
@@ skipping 60 matching lines @@
   NSRect popup_frame = anchor_rect_base;
   // Size to fit the matrix and shift down by the size.
   popup_frame.size.height = matrixHeight + kPopupPaddingVertical * 2.0;
   popup_frame.size.height += [OmniboxPopupTopSeparatorView preferredHeight];
   popup_frame.size.height += [OmniboxPopupBottomSeparatorView preferredHeight];
   popup_frame.origin.y -= NSHeight(popup_frame);
   // Shift to screen coordinates.
   popup_frame.origin =
       [[controller window] convertBaseToScreen:popup_frame.origin];
 
-  // Do nothing if the popup is already animating to the given |frame|.
-  if (NSEqualRects(popup_frame, target_popup_frame_))
-    return;
-
   // Top separator.
   NSRect top_separator_frame = NSZeroRect;
   top_separator_frame.size.width = NSWidth(popup_frame);
   top_separator_frame.size.height =
       [OmniboxPopupTopSeparatorView preferredHeight];
   [top_separator_view_ setFrame:top_separator_frame];
 
   // Bottom separator.
   NSRect bottom_separator_frame = NSZeroRect;
   bottom_separator_frame.size.width = NSWidth(popup_frame);
   bottom_separator_frame.size.height =
       [OmniboxPopupBottomSeparatorView preferredHeight];
   bottom_separator_frame.origin.y =
       NSHeight(popup_frame) - NSHeight(bottom_separator_frame);
   [bottom_separator_view_ setFrame:bottom_separator_frame];
 
   // Background view.
   NSRect background_rect = NSZeroRect;
   background_rect.size.width = NSWidth(popup_frame);
   background_rect.size.height = NSHeight(popup_frame) -
       NSHeight(top_separator_frame) - NSHeight(bottom_separator_frame);
   background_rect.origin.y = NSMaxY(top_separator_frame);
   [background_view_ setFrame:background_rect];
 
+  // Calculate the width of the table based on backing out the popup's border
+  // from the width of the field.
+  const CGFloat tableWidth = NSWidth([field_ bounds]);
+  DCHECK_GT(tableWidth, 0.0);
+
   // Matrix.
   NSPoint field_origin_base =
       [field_ convertPoint:[field_ bounds].origin toView:nil];
   NSRect matrix_frame = NSZeroRect;
   matrix_frame.origin.x = field_origin_base.x - NSMinX(anchor_rect_base);
   matrix_frame.origin.y = kPopupPaddingVertical;
-  matrix_frame.size.width = [matrix_ cellSize].width;
+  matrix_frame.size.width = tableWidth;
   matrix_frame.size.height = matrixHeight;
   [matrix_ setFrame:matrix_frame];
 
   NSRect current_poup_frame = [popup_ frame];
   target_popup_frame_ = popup_frame;
 
   // Animate the frame change if the only change is that the height got smaller.
   // Otherwise, resize immediately.
   bool animate = (NSHeight(popup_frame) < NSHeight(current_poup_frame) &&
                   NSWidth(popup_frame) == NSWidth(current_poup_frame));
@@ skipping 39 matching lines @@
 }
 
 void OmniboxPopupViewMac::OpenURLForRow(size_t row,
                                         WindowOpenDisposition disposition) {
   size_t start_match = model_->result().ShouldHideTopMatch() ? 1 : 0;
   row += start_match;
   DCHECK_LT(row, GetResult().size());
   omnibox_view_->OpenMatch(GetResult().match_at(row), disposition, GURL(),
                            base::string16(), row);
 }