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--[[--
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The EventListener is an interface that handles events. This is the base class
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for @{ui.widget.widget}
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EventListeners have a rudimentary event handler/dispatcher that
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will call a method "onEventName" for an event with name
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"EventName"
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]]
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local EventListener = {}
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function EventListener:new(new_o)
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local o = new_o or {}
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setmetatable(o, self)
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self.__index = self
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if o.init then o:init() end
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return o
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end
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--[[--
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Invoke handler method for an event.
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Handler method name is determined by @{ui.event.Event}'s handler field.
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By default, it's `"on"..Event.name`.
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@tparam ui.event.Event event
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@treturn bool return true if event is consumed successfully.
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]]
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function EventListener:handleEvent(event)
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if self[event.handler] then
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Tame some ButtonTable users into re-using Buttontable instances if possible (#7166)
* QuickDictLookup, ImageViewer, NumberPicker: Smarter `update` that will re-use most of the widget's layout instead of re-instantiating all the things.
* SpinWidget/DoubleSpinWidget: The NumberPicker change above renders a hack to preserve alpha on these widgets almost unnecessary. Also fixed said hack to also apply to the center, value button.
* Button: Don't re-instantiate the frame in setText/setIcon when unnecessary (e.g., no change at all, or no layout change).
* Button: Add a refresh method that repaints and refreshes a *specific* Button (provided it's been painted once) all on its lonesome.
* ConfigDialog: Free everything that's going to be re-instatiated on update
* A few more post #7118 fixes:
* SkimTo: Always flag the chapter nav buttons as vsync
* Button: Fix the highlight on rounded buttons when vsync is enabled (e.g., it's now entirely visible, instead of showing a weird inverted corner glitch).
* Some more heuristic tweaks in Menu/TouchMenu/Button/IconButton
* ButtonTable: fix the annoying rounding issue I'd noticed in #7054 ;).
* Enable dithering in TextBoxWidget (e.g., in the Wikipedia full view). This involved moving the HW dithering align fixup to base, where it always ought to have been ;).
* Switch a few widgets that were using "partial" on close to "ui", or, more rarely, "flashui". The intent being to limit "partial" purely to the Reader, because it has a latency cost when mixed with other refreshes, which happens often enough in UI ;).
* Minor documentation tweaks around UIManager's `setDirty` to reflect that change.
* ReaderFooter: Force a footer repaint on resume if it is visible (otherwise, just update it).
* ReaderBookmark: In the same vein, don't repaint an invisible footer on bookmark count changes.
3 years ago
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--print("EventListener:handleEvent:", event.handler, "handled by", debug.getinfo(self[event.handler], "S").short_src, self)
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return self[event.handler](self, unpack(event.args))
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end
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end
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return EventListener
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