Text Window helper functions (otland#4668)

Helper functions in lua for Text Windows

data/scripts/creaturescripts/player/#text_window_example.lua

@@ -0,0 +1,19 @@
+local reactWindow = TalkAction("!textWindow")
+
+function reactWindow.onSay(player, words, param, type)
+	local txtWindow = TextWindow({
+		itemId = 1234,
+		text = "Write something here:",
+		canWrite = true,
+		length = 100,
+		callback = function(player, item, text)
+			player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, "You wrote: " .. text)
+			return true
+		end
+	})
+
+	txtWindow:sendToPlayer(player)
+	return false
+end
+
+reactWindow:register()

data/scripts/creaturescripts/player/text_window_helper.lua

@@ -0,0 +1,83 @@
+if not TextWindows then TextWindows = {} end
+
+local textWindow = {}
+textWindow.__index = textWindow
+
+function TextWindow(window) return setmetatable(window, textWindow) end
+
+function textWindow.setCallback(window, callback)
+	window.callback = callback
+	return true
+end
+
+function textWindow.setItemId(window, itemId)
+	window.itemId = itemId
+	return true
+end
+
+function textWindow.setText(window, text)
+	window.text = text
+	return true
+end
+
+function textWindow.setCanWrite(window, canWrite)
+	window.canWrite = canWrite
+	return true
+end
+
+function textWindow.setLength(window, length)
+	window.length = length
+	return true
+end
+
+function textWindow.sendToPlayer(window, player)
+	player:registerEvent("TextWindowHelperClearLogout")
+	player:registerEvent("TextWindowHelperClearDeath")
+	player:registerEvent("TextWindowHelper")
+	window.id = player:showTextDialog(window.itemId, window.text, window.canWrite, window.length)
+	local playerGuid = player:getGuid()
+	local windows = TextWindows[playerGuid]
+	if not windows then
+		windows = {}
+		TextWindows[playerGuid] = windows
+	end
+
+	windows[window.id] = window
+	return window.id
+end
+
+local textWindowHelper = CreatureEvent("TextWindowHelper")
+
+function textWindowHelper.onTextEdit(player, item, text, windowTextId)
+	player:unregisterEvent("TextWindowHelper")
+	local playerGuid = player:getGuid()
+	local windows = TextWindows[playerGuid]
+	if not windows then return true end
+	local window = windows[windowTextId]
+	if not window then return true end
+	windows[windowTextId] = nil
+	if window.id == windowTextId and window.callback then
+		return window.callback(player, item, text)
+	end
+	return true
+end
+
+textWindowHelper:register()
+
+local clearWindows = CreatureEvent("TextWindowHelperClearLogout")
+
+function clearWindows.onLogout(player)
+	TextWindows[player:getGuid()] = nil
+	return true
+end
+
+clearWindows:register()
+
+local clearWindows = CreatureEvent("TextWindowHelperClearDeath")
+
+function clearWindows.onDeath(player)
+	TextWindows[player:getGuid()] = nil
+	return true
+end
+
+clearWindows:register()