我的程序是带有MMTabBarView的Web浏览器。
关闭标签的问题通过查看日志来关闭无效元素。我在willCloseTabViewItem中调用NSMutableArray * browserViews;
时看到[browserViews removeObjectAtIndex: index];
这是代码:
.H
{
IBOutlet NSTabView *tabView;
IBOutlet MMTabBarView *tabBarControl;
IBOutlet NSSearchField *searchField;
IBOutlet NSView *mainView;
NSMutableArray *browserViews;
}
- (MMTabBarView *)tabBarControl;
- (ERBrowser *)addWebView:(NSURL *)url;
- (void)addDefaultTabs;
的.m
- (id)initWithWindow:(NSWindow *)window
{
if (self = [super initWithWindow:window])
{
browserViews = [[NSMutableArray alloc] init];
}
return self;
}
- (void)windowDidLoad{
[super windowDidLoad];
for (NSTabViewItem *item in [tabView tabViewItems])
[tabView removeTabViewItem:item];
[tabView setAutoresizesSubviews:true];
[searchField setDelegate:self];
[tabBarControl setDelegate:self];
}
- (ERBrowser *)addWebView:(NSURL *)url{
for (NSView *view in browserViews)
[view setHidden:false];
ERTabModel *tabModel = [[ERTabModel alloc] init];
NSTabViewItem *tabViewItem = [[NSTabViewItem alloc] initWithIdentifier:tabModel];
[tabView addTabViewItem:tabViewItem];
[tabView selectTabViewItem:tabViewItem];
ERBrowser *browserView = [[ERBrowser alloc] initWithFrame:mainView.frame];
[browserView setAutoresizingMask:(NSViewWidthSizable | NSViewHeightSizable)];
[mainView addSubview:browserView];
[browserViews addObject:browserView];
[browserView setUIDelegate:self];
[browserView setFrameLoadDelegate:self];
NSLog(@"%@", browserViews);
if (url)
[[browserView mainFrame] loadRequest:[NSURLRequest requestWithURL:url]];
return browserView;
}
- (void)addDefaultTabs {
[self addWebView:[NSURL URLWithString:@"http://google.com"]];
}
- (MMTabBarView *)tabBarControl {
return tabBarControl;
}
// Method called when webView javascript requests new window with request
- (WebView *)webView:(WebView *)sender createWebViewWithRequest:(NSURLRequest *)request
{
NSLog(@"createWebViewWithRequest!");
return [self addWebView:[request URL]];
}
// MMTabBarVievDelegate
- (void)tabView:(NSTabView *)aTabView didSelectTabViewItem:(NSTabViewItem *)tabViewItem {
NSUInteger index = [aTabView indexOfTabViewItem:tabViewItem];
NSLog(@"didSelectTabViewItem Index %ld", (long)index);
if ([browserViews count] > index)
{
for (NSView *view in browserViews)
[view setHidden:true];
ERBrowser *browserView = browserViews[index];
[browserView setHidden:false];
NSLog(@"Index change focus tab %ld", (long)index);
[searchField setStringValue:@""];
[tabViewItem setLabel:[browserView stringByEvaluatingJavaScriptFromString:@"document.title"]];
}
}
- (void)tabView:(NSTabView *)aTabView willCloseTabViewItem:(NSTabViewItem *)tabViewItem
{
NSUInteger index = [aTabView indexOfTabViewItem:[tabView selectedTabViewItem]];
NSLog(@"willCloseTabViewItem Index %ld", (long)index);
if ([browserViews count] > index)
{
[browserViews removeObjectAtIndex:index];
NSLog(@"%@" @"%ld", browserViews, (long)index);
}
}
并记录: 该程序加载默认的标签google.com:
2015-03-26 17:51:57.634 ERClient [89171:26065490] didSelectTabViewItem 指数0
2015-03-26 17:51:59.030 ERClient [89171:26065490](ERBrowser: 0x600000124060)
2015-03-26 17:52:02.278 ERClient [89171:26065490] didReceiveTitle!
Gmail在新标签页中打开:
2015-03-26 17:53:51.994 ERClient [89171:26065490] createWebViewWithRequest!
2015-03-26 17:53:51.995 ERClient [89171:26065490] didSelectTabViewItem 指数1
2015-03-26 17:53:52.035 ERClient [89171:26065490](ERBrowser: 0x600000124060,ERBrowser:0x600000121cc0)
2015-03-26 17:53:53.987 ERClient [89171:26065490] didReceiveTitle!
2015-03-26 17:53:56.451 ERClient [89171:26065490] didReceiveTitle!
2015-03-26 17:53:59.003 ERClient [89171:26065490] didReceiveTitle! - 我不明白为什么会发生这种情况3次而不是2次
关注带有索引1的Tab 2,我将焦点更改为第一个Tab索引0,然后返回:
2015-03-26 17:57:56.384 ERClient [89171:26065490] didSelectTabViewItem 指数0
2015-03-26 17:57:56.477 ERClient [89171:26065490]指数变化焦点 标签0
2015-03-26 17:57:58.206 ERClient [89171:26065490] didSelectTabViewItem 指数1
2015-03-26 17:57:58.207 ERClient [89171:26065490]指数变化焦点 标签1
现在我关闭带有索引1的Tab 2:
2015-03-26 17:58:55.691 ERClient [89171:26065490] willCloseTabViewItem 指数1
2015-03-26 17:58:55.691 ERClient [89171:26065490](ERBrowser: 0x600000124060)1
2015-03-26 17:58:55.692 ERClient [89171:26065490] didSelectTabViewItem 指数0
2015-03-26 17:58:55.693 ERClient [89171:26065490]指数变更焦点 标签0
事实证明,使用有效标题打开标签1,但内容仍保留在标签2上:
如果我打开另一个标签页,那么还会显示gmail 告诉我如何修复它或在哪里阅读为什么会发生这种情况
答案 0 :(得分:0)
问题本身已经解决了。
问题是由于我在编程方面有一点经验。
现在我将描述为什么不工作。
从NSMutableArray中删除对象时,仍然保留带有加载页面的WebView对象。有必要添加[browserView removeFromSuperview];
代码如下:
- (void)tabView:(NSTabView *)aTabView willCloseTabViewItem:(NSTabViewItem *)tabViewItem
{
NSUInteger index = [aTabView indexOfTabViewItem:[tabView selectedTabViewItem]];
if ([browserViews count] > index)
{
ERBrowser *browserView = browserViews[index];
[browserViews removeObjectAtIndex:index];
[browserView removeFromSuperview];
}
}
将来创建带有标签栏的Web浏览器
可能会有用答案 1 :(得分:0)
此外,您应该根据文档调用super方法:
/* Implemented methods from NSTabViewDelegate. These require a call to super if overriden by a subclass. */
- (void)tabView:(NSTabView *)tabView willSelectTabViewItem:(nullable NSTabViewItem *)tabViewItem NS_REQUIRES_SUPER;
- (void)tabView:(NSTabView *)tabView didSelectTabViewItem:(nullable NSTabViewItem *)tabViewItem NS_REQUIRES_SUPER;
- (BOOL)tabView:(NSTabView *)tabView shouldSelectTabViewItem:(nullable NSTabViewItem *)tabViewItem NS_REQUIRES_SUPER;