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103 lines
3.0 KiB
CoffeeScript
103 lines
3.0 KiB
CoffeeScript
10 years ago
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RateLimitedCall = require "../lib/RateLimitedCall"
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module.exports = (module) ->
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module.factory "windowManager", ->
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$document = $(document)
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return {
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nextZIndex: 0
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nextId: 0
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windows: {}
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currentlyFocusedWindow: null
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currentlyDraggedWindow: null
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dragWindowOffset: null
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currentlyResizedWindow: null
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resizeWindowOffset: null
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positionCall: null
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disableSelection: (element = $document) ->
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element
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.attr "unselectable", "on"
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.css "user-select", "none"
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.on "selectstart", false
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enableSelection: (element = $document) ->
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element
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.attr "unselectable", "off"
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.css "user-select", "text"
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.off "selectstart"
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addWindow: (window) ->
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windowId = (@nextId += 1).toString() # Because otherwise comparisons will go derp...
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windowZIndex = @nextZIndex += 1
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@windows[windowId] = window
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window.$on "$destroy", (event) =>
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delete @windows[windowId]
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@focusWindow windowId
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return windowId
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startDrag: (targetWindowId, offset) ->
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@currentlyDraggedWindow = windowScope = @windows[targetWindowId]
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@dragWindowOffset = offset
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@disableSelection()
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@positionCall = new RateLimitedCall 30, ->
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windowScope.$apply =>
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windowScope.x = this.x
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windowScope.y = this.y
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$document.on "mousemove.dragWindow", (event) =>
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[offsetX, offsetY] = @dragWindowOffset
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@positionCall.call ->
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this.x = event.pageX - offsetX
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this.y = event.pageY - offsetY
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$document.on "mouseup.dragWindow", (event) =>
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# Clear events and reset internal state
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$document.off "mousemove.dragWindow"
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$document.off "mouseup.dragWindow"
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@currentlyDraggedWindow = null
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@dragWindowOffset = null
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@enableSelection()
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startResize: (targetWindowId, offset) ->
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@currentlyResizedWindow = windowScope = @windows[targetWindowId]
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@resizeWindowOffset = offset
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@disableSelection()
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@sizeCall = new RateLimitedCall 30, ->
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windowScope.$apply =>
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windowScope.width = this.w
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windowScope.height = this.h
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$document.on "mousemove.resizeWindow", (event) =>
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[offsetW, offsetH] = @resizeWindowOffset
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@sizeCall.call ->
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this.w = event.pageX - offsetW
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this.h = event.pageY - offsetH
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$document.on "mouseup.resizeWindow", (event) =>
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# Clear events and reset internal state
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$document.off "mousemove.resizeWindow"
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$document.off "mouseup.resizeWindow"
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@currentlyResizedWindow = null
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@resizeWindowOffset = null
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@enableSelection()
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focusWindow: (targetWindowId) ->
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for windowId, windowScope of @windows
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if windowId == targetWindowId
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# There's no point in wasting CPU cycles on focusing a window that's
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# already focused to begin with. Could also cause issues with z-index
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# consumption.
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if @currentlyFocusedWindow != windowScope
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windowScope.focused = true
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windowScope.setZIndex(@nextZIndex += 1)
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@currentlyFocusedWindow = windowScope
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else
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windowScope.focused = false
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}
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