更新選字窗元件，與 OpenVanilla 同步

Source/CandidateUI/VTCandidateController.h

@@ -42,6 +42,7 @@
     NSArray *_keyLabels;
     NSFont *_keyLabelFont;
     NSFont *_candidateFont;
+    BOOL _visible;
 }
 
 - (void)reloadData;

Source/CandidateUI/VTCandidateController.m

@@ -81,6 +81,17 @@
 
 - (void)setWindowTopLeftPoint:(NSPoint)topLeftPoint bottomOutOfScreenAdjustmentHeight:(CGFloat)height
 {
+    // Since layout is now deferred, the origin setting should also be deferred so that
+    // the correct visible frame dimensions are used.
+    NSArray *params = [NSArray arrayWithObjects:[NSValue valueWithPoint:topLeftPoint], [NSNumber numberWithDouble:height], nil];
+    [self performSelector:@selector(deferredSetWindowTopLeftPoint:) withObject:params afterDelay:0.0];
+}
+
+- (void)deferredSetWindowTopLeftPoint:(NSArray *)params
+{
+    NSPoint topLeftPoint = [[params objectAtIndex:0] pointValue];
+    CGFloat height = [[params objectAtIndex:1] doubleValue];
+
     NSPoint adjustedPoint = topLeftPoint;
     CGFloat adjustedHeight = height;
     
@@ -132,11 +143,13 @@
 
 - (BOOL)visible
 {
-    return [[self window] isVisible];
+    // Because setVisible: defers its action, we need to use our own visible. Do not use [[self window] isVisible].
+    return _visible;
 }
 
 - (void)setVisible:(BOOL)visible
 {
+    _visible = visible;
     if (visible) {
         [[self window] performSelector:@selector(orderFront:) withObject:self afterDelay:0.0];
     }

Source/CandidateUI/VTVerticalCandidateController.m

@@ -162,18 +162,27 @@ static const CGFloat kCandidateTextLeftMargin = 8.0;
     return (selectedRow == -1) ? NSUIntegerMax : selectedRow;
 }
 
-- (void)setSelectedCandidateIndex:(NSUInteger)newIndex
+- (void)setSelectedCandidateIndex:(NSUInteger)aNewIndex
 {
+    NSUInteger newIndex = aNewIndex;
+
     NSInteger selectedRow = [_tableView selectedRow];
 
     NSUInteger labelCount = [_keyLabels count];
     NSUInteger itemCount = [_delegate candidateCountForController:self];
-    
+
+    if (newIndex == NSUIntegerMax) {
+        if (itemCount == 0) {
+            [_tableView deselectAll:self];
+            return;
+        }
+        newIndex = 0;
+    }
+
     NSUInteger lastVisibleRow = newIndex;
-    
     if (selectedRow != -1 && itemCount > 0 && itemCount > labelCount) {
         if (newIndex > selectedRow && (newIndex - selectedRow) > 1) {
-            lastVisibleRow = min(newIndex + labelCount - 1, itemCount - 1);            
+            lastVisibleRow = min(newIndex + labelCount - 1, itemCount - 1);
         }
         
         // no need to handle the backward case: (newIndex < selectedRow && selectedRow - newIndex > 1)
@@ -182,7 +191,7 @@ static const CGFloat kCandidateTextLeftMargin = 8.0;
     if (itemCount > labelCount) {
         [_tableView scrollRowToVisible:lastVisibleRow];
     }
-    
+
     [_tableView selectRowIndexes:[NSIndexSet indexSetWithIndex:newIndex] byExtendingSelection:NO];
 }
 
@@ -237,7 +246,7 @@ static const CGFloat kCandidateTextLeftMargin = 8.0;
             }
         }
         
-        if (newHilightIndex != _keyLabelStripView.highlightedIndex) {
+        if (newHilightIndex != _keyLabelStripView.highlightedIndex && newHilightIndex >= 0) {
             _keyLabelStripView.highlightedIndex = newHilightIndex;
             [_keyLabelStripView setNeedsDisplay:YES];            
         }
@@ -341,6 +350,12 @@ static const CGFloat kCandidateTextLeftMargin = 8.0;
 }
                            
 - (void)layoutCandidateView
+{
+     [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(doLayoutCanaditeView) object:nil];
+     [self performSelector:@selector(doLayoutCanaditeView) withObject:nil afterDelay:0.0];
+}
+
+- (void)doLayoutCanaditeView
 {
     NSUInteger count = [_delegate candidateCountForController:self];
     if (!count) {
@@ -382,9 +397,19 @@ static const CGFloat kCandidateTextLeftMargin = 8.0;
     
     CGFloat rowHeight = ceil(fontSize * 1.25);
     [_tableView setRowHeight:rowHeight];
-    
+
+    CGFloat maxKeyLabelWidth = keyLabelFontSize;
+    NSDictionary *textAttr = [NSDictionary dictionaryWithObjectsAndKeys:
+                              _keyLabelFont, NSFontAttributeName,
+                              nil];
+    NSSize boundingBox = NSMakeSize(1600.0, 1600.0);
+    for (NSString *label in _keyLabels) {
+        NSRect rect = [label boundingRectWithSize:boundingBox options:NSStringDrawingUsesLineFragmentOrigin attributes:textAttr];
+        maxKeyLabelWidth = max(rect.size.width, maxKeyLabelWidth);
+    }
+
     CGFloat rowSpacing = [_tableView intercellSpacing].height;    
-    CGFloat stripWidth = ceil(keyLabelFontSize * 1.20);
+    CGFloat stripWidth = ceil(maxKeyLabelWidth * 1.20);
     CGFloat tableViewStartWidth = ceil(_maxCandidateAttrStringWidth + scrollerWidth);;
     CGFloat windowWidth = stripWidth + 1.0 + tableViewStartWidth;
     CGFloat windowHeight = keyLabelCount * (rowHeight + rowSpacing);