feat(hammerspoon): show app name on focus and command key
Extract window highlighting into a dedicated module and centralize shared configuration. Add a configurable app name toast triggered by focus changes and Command key presses.
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Tri Vo Khac committed
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@@ -0,0 +1,307 @@
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local WindowHighlight = {}
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WindowHighlight.__index = WindowHighlight
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local function sameFrame(a, b)
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if not a or not b then return false end
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return math.abs(a.x - b.x) < 0.1
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and math.abs(a.y - b.y) < 0.1
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and math.abs(a.w - b.w) < 0.1
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and math.abs(a.h - b.h) < 0.1
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end
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local function lerp(a, b, t)
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return a + (b - a) * t
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end
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local function easeOutCubic(t)
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return 1 - math.pow(1 - t, 3)
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end
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function WindowHighlight.new(config, callbacks)
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local border = hs.drawing.rectangle(hs.geometry.rect(0, 0, 1, 1))
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border:setFill(false)
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border:setStroke(true)
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border:setStrokeWidth(config.borderWidth)
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border:setStrokeColor(config.color)
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border:setRoundedRectRadii(config.radius, config.radius)
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border:setLevel(hs.drawing.windowLevels.screenSaver)
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border:setBehaviorByLabels({
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"canJoinAllSpaces",
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"stationary",
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"ignoresCycle",
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"fullScreenAuxiliary",
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})
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return setmetatable({
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config = config,
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callbacks = callbacks or {},
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border = border,
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currentFrame = nil,
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animationTimer = nil,
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missionControlActive = false,
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dockElement = nil,
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liveWindowWatcher = nil,
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watchedWindowId = nil,
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lastPolledWindowId = nil,
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lastPolledFrame = nil,
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watchers = {},
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}, WindowHighlight)
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end
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function WindowHighlight:isMissionControlActive()
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return self.missionControlActive
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end
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function WindowHighlight:rectForWindow(win)
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local frame = win:frame()
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local screen = win:screen()
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local screenFrame = screen:fullFrame()
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local visibleFrame = screen:frame()
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local pad = self.config.padding
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local left = math.max(frame.x - pad, screenFrame.x)
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local top = math.max(frame.y - pad, visibleFrame.y)
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local right = math.min(
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frame.x + frame.w + pad,
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screenFrame.x + screenFrame.w
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)
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local bottom = math.min(
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frame.y + frame.h + pad,
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screenFrame.y + screenFrame.h
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)
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return {
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x = left,
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y = top,
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w = right - left,
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h = bottom - top,
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}
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end
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function WindowHighlight:isValidWindow(win)
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if not win then return false end
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if not win:isStandard() then return false end
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if self.config.hideOnFullscreen and win:isFullScreen() then return false end
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return win:application() ~= nil
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end
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function WindowHighlight:hide()
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if self.animationTimer then
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self.animationTimer:stop()
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self.animationTimer = nil
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end
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self.border:hide()
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end
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function WindowHighlight:isMissionControlOpen()
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if not (self.dockElement and self.dockElement:isValid()) then
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local dockApps = hs.application.applicationsForBundleID("com.apple.dock")
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local dockApp = dockApps and dockApps[1]
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if not dockApp then return false end
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self.dockElement = hs.axuielement.applicationElement(dockApp)
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end
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for _, element in ipairs(self.dockElement) do
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if element.AXIdentifier == "mc" then return true end
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end
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return false
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end
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function WindowHighlight:setFrame(frame)
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self.border:setFrame(frame)
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self.border:show()
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end
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function WindowHighlight:animateTo(targetFrame)
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if self.animationTimer then
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self.animationTimer:stop()
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self.animationTimer = nil
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end
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if not self.config.animation or not self.currentFrame then
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self.currentFrame = targetFrame
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self:setFrame(targetFrame)
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return
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end
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local startFrame = self.currentFrame
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local step = 0
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local steps = self.config.animationSteps
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local interval = self.config.animationDuration / steps
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self.animationTimer = hs.timer.doEvery(interval, function()
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step = step + 1
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local t = easeOutCubic(step / steps)
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local frame = {
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x = lerp(startFrame.x, targetFrame.x, t),
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y = lerp(startFrame.y, targetFrame.y, t),
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w = lerp(startFrame.w, targetFrame.w, t),
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h = lerp(startFrame.h, targetFrame.h, t),
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}
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self.currentFrame = frame
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self:setFrame(frame)
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if step >= steps then
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self.animationTimer:stop()
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self.animationTimer = nil
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self.currentFrame = targetFrame
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self:setFrame(targetFrame)
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end
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end)
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end
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function WindowHighlight:update(immediate)
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if self.missionControlActive then
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self:hide()
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self.currentFrame = nil
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return
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end
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local win = hs.window.focusedWindow()
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if not self:isValidWindow(win) then
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self:hide()
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self.currentFrame = nil
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return
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end
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local targetFrame = self:rectForWindow(win)
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if not immediate then
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self:animateTo(targetFrame)
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return
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end
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if self.animationTimer then
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self.animationTimer:stop()
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self.animationTimer = nil
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end
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self.currentFrame = targetFrame
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self:setFrame(targetFrame)
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end
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function WindowHighlight:watchFocusedWindowLive()
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local win = hs.window.focusedWindow()
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local windowId = win and win:id() or nil
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if self.liveWindowWatcher and self.watchedWindowId == windowId then return end
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if self.liveWindowWatcher then
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self.liveWindowWatcher:stop()
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self.liveWindowWatcher = nil
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end
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self.watchedWindowId = windowId
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if not win then return end
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self.liveWindowWatcher = win:newWatcher(function(_, event)
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if event == hs.uielement.watcher.windowMoved
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or event == hs.uielement.watcher.windowResized then
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self:update(true)
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end
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end)
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self.liveWindowWatcher:start({
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hs.uielement.watcher.windowMoved,
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hs.uielement.watcher.windowResized,
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hs.uielement.watcher.elementDestroyed,
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})
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end
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function WindowHighlight:start()
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local windowFilter = hs.window.filter.new(nil)
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windowFilter:subscribe({
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hs.window.filter.windowFocused,
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hs.window.filter.windowMoved,
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hs.window.filter.windowTitleChanged,
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hs.window.filter.windowUnfocused,
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}, function()
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self:update(false)
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end)
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windowFilter:subscribe(hs.window.filter.windowFocused, function()
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self:watchFocusedWindowLive()
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if self.callbacks.onWindowFocused then
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self.callbacks.onWindowFocused()
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end
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end)
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local applicationWatcher = hs.application.watcher.new(function()
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hs.timer.doAfter(0.05, function()
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self:watchFocusedWindowLive()
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self:update(false)
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end)
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end)
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applicationWatcher:start()
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local spacesWatcher = hs.spaces.watcher.new(function()
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hs.timer.doAfter(0.15, function()
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self:update(false)
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end)
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end)
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spacesWatcher:start()
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local missionControlWatcher = hs.timer.doEvery(0.1, function()
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local ok, isOpen = pcall(function()
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return self:isMissionControlOpen()
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end)
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if not ok or isOpen == self.missionControlActive then return end
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self.missionControlActive = isOpen
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self.currentFrame = nil
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if self.missionControlActive then
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self:hide()
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else
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hs.timer.doAfter(0.15, function()
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self:update(false)
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end)
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end
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end)
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local framePollingWatcher = hs.timer.doEvery(
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1 / self.config.framePollingFps,
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function()
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if self.missionControlActive then return end
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local win = hs.window.focusedWindow()
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local windowId = win and win:id() or nil
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if windowId ~= self.lastPolledWindowId then
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self.lastPolledWindowId = windowId
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self.lastPolledFrame = win and win:frame() or nil
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return
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end
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if not win then return end
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local frame = win:frame()
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if sameFrame(frame, self.lastPolledFrame) then return end
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self.lastPolledFrame = frame
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self:update(true)
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end
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)
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self.watchers = {
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windowFilter = windowFilter,
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application = applicationWatcher,
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spaces = spacesWatcher,
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missionControl = missionControlWatcher,
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framePolling = framePollingWatcher,
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}
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hs.timer.doAfter(0.5, function()
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self:update(false)
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self:watchFocusedWindowLive()
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end)
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return self
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end
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return WindowHighlight
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