重构

CustomKeyboard/View/KBKeyboardView/KBKeyboardRowContainerBuilder.m

@@ -0,0 +1,59 @@
+//
+//  KBKeyboardRowContainerBuilder.m
+//  CustomKeyboard
+//
+
+#import "KBKeyboardRowContainerBuilder.h"
+#import <Masonry/Masonry.h>
+
+@implementation KBKeyboardRowContainerBuilder
+
+- (void)rebuildRowContainersForRows:(NSArray<KBKeyboardRowConfig *> *)rowConfigs
+                        inContainer:(UIView *)container
+                           rowViews:(NSMutableArray<UIView *> *)rowViews
+                         rowSpacing:(CGFloat)rowSpacing
+                           topInset:(CGFloat)topInset
+                        bottomInset:(CGFloat)bottomInset {
+    if (!container || !rowViews) { return; }
+
+    for (UIView *row in rowViews) {
+        [row removeFromSuperview];
+    }
+    [rowViews removeAllObjects];
+
+    NSUInteger rowCount = rowConfigs.count;
+    if (rowCount == 0) { return; }
+
+    UIView *firstRow = nil;
+    UIView *previousRow = nil;
+    for (NSUInteger i = 0; i < rowCount; i++) {
+        UIView *rowView = [UIView new];
+        [container addSubview:rowView];
+        [rowViews addObject:rowView];
+
+        [rowView mas_makeConstraints:^(MASConstraintMaker *make) {
+            if (previousRow) {
+                make.top.equalTo(previousRow.mas_bottom).offset(rowSpacing);
+            } else {
+                make.top.equalTo(container.mas_top).offset(topInset);
+            }
+            make.left.right.equalTo(container);
+            // 所有行等高，自动根据可用空间分配行高
+            if (firstRow) {
+                make.height.equalTo(firstRow);
+            }
+        }];
+
+        // 最后一行锚定到底部
+        if (i == rowCount - 1) {
+            [rowView mas_makeConstraints:^(MASConstraintMaker *make) {
+                make.bottom.equalTo(container.mas_bottom).offset(-bottomInset);
+            }];
+        }
+
+        if (!firstRow) { firstRow = rowView; }
+        previousRow = rowView;
+    }
+}
+
+@end