Show/hide UIToolbar, "match finger movement", precisely as in for example iOS7 Safari
There is no open-source that does this, but I don't see it as that difficult to implement. It may be somewhat more difficult to have the exact 1:1 behavior as Safari, but it can still be done.
MobileSafar can be attached to in the debugger and, using breakpoints and the Objective C runtime, debugged and reverse engineered.
For example, your two assumptions that no toolbar and navigation bars are used are incorrect.
Here is the view hierarchy before scrolling:
http://pastebin.com/aRXr7b5Z
And after scrolling:
http://pastebin.com/CasBNuxq
As you can see, the bars have been moved from their normal location.
Breaking on -[BrowserToolbar setFrame:]
, here is the stack trace:
* thread #1: tid = 0x2332c, 0x000000010003fa70 MobileSafari`___lldb_unnamed_function1519$$MobileSafari, queue = 'com.apple.main-thread', stop reason = breakpoint 8.1
* frame #0: 0x000000010003fa70 MobileSafari`___lldb_unnamed_function1519$$MobileSafari
frame #1: 0x0000000100023e51 MobileSafari`___lldb_unnamed_function825$$MobileSafari + 1338
frame #2: 0x00000001000268da MobileSafari`___lldb_unnamed_function871$$MobileSafari + 55
frame #3: 0x000000010009856a MobileSafari`___lldb_unnamed_function3864$$MobileSafari + 388
frame #4: 0x0000000100098996 MobileSafari`___lldb_unnamed_function3871$$MobileSafari + 154
frame #5: 0x000000010002ba89 MobileSafari`___lldb_unnamed_function990$$MobileSafari + 209
frame #6: 0x0000000102396a8c UIKit`-[UIScrollView(UIScrollViewInternal) _notifyDidScroll] + 55
frame #7: 0x000000010238692b UIKit`-[UIScrollView setContentOffset:] + 628
frame #8: 0x000000010238ab00 UIKit`-[UIScrollView _updatePanGesture] + 1989
frame #9: 0x0000000102644002 UIKit`_UIGestureRecognizerSendActions + 188
frame #10: 0x0000000102642f68 UIKit`-[UIGestureRecognizer _updateGestureWithEvent:buttonEvent:] + 357
frame #11: 0x0000000102647319 UIKit`___UIGestureRecognizerUpdate_block_invoke + 53
frame #12: 0x00000001026472a1 UIKit`_UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 257
frame #13: 0x000000010263f377 UIKit`_UIGestureRecognizerUpdate + 93
frame #14: 0x0000000102353e55 UIKit`-[UIWindow _sendGesturesForEvent:] + 928
frame #15: 0x0000000102354b14 UIKit`-[UIWindow sendEvent:] + 909
frame #16: 0x000000010232c6da UIKit`-[UIApplication sendEvent:] + 211
frame #17: 0x0000000102319f2d UIKit`_UIApplicationHandleEventQueue + 9579
frame #18: 0x0000000100573f21 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
frame #19: 0x00000001005737f2 CoreFoundation`__CFRunLoopDoSources0 + 242
frame #20: 0x000000010058f66f CoreFoundation`__CFRunLoopRun + 767
frame #21: 0x000000010058ef83 CoreFoundation`CFRunLoopRunSpecific + 467
frame #22: 0x00000001011a0f04 GraphicsServices`GSEventRunModal + 161
frame #23: 0x000000010231c273 UIKit`UIApplicationMain + 1010
frame #24: 0x00000001000518d2 MobileSafari`___lldb_unnamed_function1998$$MobileSafari + 1558
So it all happens after a notification of scrolling.
I put a breakpoint on MobileSafari'___lldb_unnamed_function990$$MobileSafari
and to get the self
variable, print po $arg1
. This is where all the magic happens:
http://pastebin.com/kjAXKKTW
If you are really interested in 1:1 replication, you can put breakpoints on these methods and investigate. Good luck!