feat(greenhouse): add goto command

made some other minor changes (in terms of how much it
matters to the user)

the toc page is now a "special page"
in a next commit itll also be used for a help page

cursor gets hidden unless typing a command

nature/commands/greenhouse.lua

@@ -10,10 +10,17 @@ commander.register('greenhouse', function(args, sinks)
 	local gh = Greenhouse(sinks.out)
 
 	local buffer = ''
+	local display = ''
 	local command = false
 	local commands = {
 		q = function()
 			gh.keybinds['Ctrl-D'](gh)
+		end,
+		['goto'] = function(args)
+			if not args[1] then
+				return 'nuh uh'
+			end
+			gh:jump(tonumber(args[1]))
 		end
 	}
 
@@ -30,13 +37,13 @@ commander.register('greenhouse', function(args, sinks)
 		oldDraw(self)
 		local workingPage = self.pages[self.curPage]
 		local offset = self.offset
-		if self.isToc then
-			offset = self.tocOffset
-			workingPage = self.tocPage
+		if self.isSpecial then
+			offset = self.specialOffset
+			workingPage = self.specialPage
 		end
 
 		self.sink:write(ansikit.getCSI((self.region.height + 2) - self.start.. ';1', 'H'))
-		if not self.isToc then
+		if not self.isSpecial then
 			self.sink:write(string.format('\27[0mPage %d', self.curPage))
 			if workingPage.title ~= '' then
 				self.sink:writeln(' — ' .. workingPage.title)
@@ -44,7 +51,7 @@ commander.register('greenhouse', function(args, sinks)
 				self.sink:writeln('')
 			end
 		end
-		self.sink:write(buffer)
+		self.sink:write(buffer == '' and display or buffer)
 	end
 	function gh:input(c)
 		-- command handling
@@ -52,16 +59,26 @@ commander.register('greenhouse', function(args, sinks)
 			command = true
 		end
 		if c == 'Escape' then
-			command = false
-			buffer = ''
-			goto update
+			if command then
+				command = false
+				buffer = ''
+			else
+				if self.isSpecial then gh:special() end
+			end
 		elseif c == 'Backspace' then
 			buffer = buffer:sub(0, -2)
-			goto update
+			if buffer == '' then
+				command = false
+			else
+				goto update
+			end
 		end
 
 		if command then
-			buffer = buffer .. c
+			ansikit.showCursor()
+			if buffer:match '^:' then buffer = buffer .. c else buffer = c end
+		else
+			ansikit.hideCursor()
 		end
 
 		::update::
@@ -70,9 +87,9 @@ commander.register('greenhouse', function(args, sinks)
 	gh:resize()
 
 	gh:keybind('Enter', function(self)
-		if self.isToc then
-			self:jump(self.tocPageIdx)
-			self:toc(true)
+		if self.isSpecial then
+			self:jump(self.specialPageIdx)
+			self:special(true)
 		else
 			if buffer:len() < 2 then return end
 
@@ -80,7 +97,7 @@ commander.register('greenhouse', function(args, sinks)
 			local command = commands[splitBuf[1]:sub(2)]
 			if command then
 				table.remove(splitBuf, 1)
-				command(splitBuf)
+				buffer = command(splitBuf) or ''
 			end
 			self:update()
 		end

nature/greenhouse/init.lua

@@ -27,10 +27,10 @@ function Greenhouse:new(sink)
 		['Ctrl-Right'] = self.next,
 		['Ctrl-N'] = function(self) self:toc(true) end,
 	}
-	self.isToc = false
-	self.tocPage = nil
-	self.tocPageIdx = 1
-	self.tocOffset = 1
+	self.isSpecial = false
+	self.specialPage = nil
+	self.specialPageIdx = 1
+	self.specialOffset = 1
 
 	return self
 end
@@ -47,9 +47,9 @@ end
 function Greenhouse:draw()
 	local workingPage = self.pages[self.curPage]
 	local offset = self.offset
-	if self.isToc then
-		offset = self.tocOffset
-		workingPage = self.tocPage
+	if self.isSpecial then
+		offset = self.specialOffset
+		workingPage = self.specialPage
 	end
 
 	local lines = workingPage.lines
@@ -69,7 +69,7 @@ function Greenhouse:render()
 end
 
 function Greenhouse:scroll(direction)
-	if self.isToc then
+	if self.isSpecial then
 		if direction == 'down' then
 			self:next(true)
 		elseif direction == 'up' then
@@ -92,24 +92,56 @@ end
 
 function Greenhouse:update()
 	self:resize()
-	if self.isToc then
-		self:toc()
+	if self.isSpecial then
+		self:special()
 	end
 
 	self:draw()
 end
 
+function Greenhouse:special()
+	self.isSpecial = not self.isSpecial
+end
+
+function Greenhouse:toc(toggle)
+	if not self.isSpecial then
+		self.specialPageIdx = self.curPage
+	end
+	if toggle then self.isSpecial = not self.isSpecial end
+	-- Generate a special page for our table of contents
+	local tocText = string.format([[
+%s
+
+]], lunacolors.cyan(lunacolors.bold '―― Table of Contents ――'))
+
+	local genericPageCount = 1
+	for i, page in ipairs(self.pages) do
+		local title = page.title
+		if title == 'Page' then
+			title = 'Page #' .. genericPageCount
+			genericPageCount = genericPageCount + 1
+		end
+		if i == self.specialPageIdx then
+			title = lunacolors.invert(title)
+		end
+
+		tocText = tocText .. title .. '\n'
+	end
+	self.specialPage = Page('TOC', tocText)
+	self:draw()
+end
+
 function Greenhouse:resize()
 	local size = terminal.size()
 	self.region = size
 end
 
-function Greenhouse:next(toc)
-	local oldCurrent = toc and self.tocPageIdx or self.curPage
+function Greenhouse:next(special)
+	local oldCurrent = special and self.specialPageIdx or self.curPage
 	local pageIdx = math.min(oldCurrent + 1, #self.pages)
 
-	if toc then
-		self.tocPageIdx = pageIdx
+	if special then
+		self.specialPageIdx = pageIdx
 	else
 		self.curPage = pageIdx
 	end
@@ -120,12 +152,12 @@ function Greenhouse:next(toc)
 	end
 end
 
-function Greenhouse:previous(toc)
-	local oldCurrent = toc and self.tocPageIdx or self.curPage
+function Greenhouse:previous(special)
+	local oldCurrent = special and self.specialPageIdx or self.curPage
 	local pageIdx = math.max(self.curPage - 1, 1)
 
-	if toc then
-		self.tocPageIdx = pageIdx
+	if special then
+		self.specialPageIdx = pageIdx
 	else
 		self.curPage = pageIdx
 	end
@@ -148,34 +180,6 @@ function Greenhouse:keybind(key, callback)
 	self.keybinds[key] = callback
 end
 
-function Greenhouse:toc(toggle)
-	if not self.isToc then
-		self.tocPageIdx = self.curPage
-	end
-	if toggle then self.isToc = not self.isToc end
-	-- Generate a special page for our table of contents
-	local tocText = string.format([[
-%s
-
-]], lunacolors.cyan(lunacolors.bold '―― Table of Contents ――'))
-
-	local genericPageCount = 1
-	for i, page in ipairs(self.pages) do
-		local title = page.title
-		if title == 'Page' then
-			title = 'Page #' .. genericPageCount
-			genericPageCount = genericPageCount + 1
-		end
-		if i == self.tocPageIdx then
-			title = lunacolors.invert(title)
-		end
-
-		tocText = tocText .. title .. '\n'
-	end
-	self.tocPage = Page('TOC', tocText)
-	self:draw()
-end
-
 function Greenhouse:input(char)
 end
 
@@ -198,6 +202,7 @@ function Greenhouse:initUi()
 	end)
 
 	ansikit.screenAlt()
+	ansikit.hideCursor()
 	ansikit.clear(true)
 	self:draw()
 
@@ -251,6 +256,7 @@ function Greenhouse:initUi()
 	while not done do
 		--
 	end
+	ansikit.showCursor()
 	ansikit.screenMain()
 end