198 lines
7.4 KiB
Lua
198 lines
7.4 KiB
Lua
local VisualElement = require("elements/VisualElement")
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local tHex = require("libraries/colorHex")
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--- This is the table class. It provides a sortable data grid with customizable columns,
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--- row selection, and scrolling capabilities.
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---@class Table : VisualElement
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local Table = setmetatable({}, VisualElement)
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Table.__index = Table
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---@property columns table {} List of column definitions with {name, width} properties
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Table.defineProperty(Table, "columns", {default = {}, type = "table"})
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---@property data table {} The table data as array of row arrays
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Table.defineProperty(Table, "data", {default = {}, type = "table", canTriggerRender = true})
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---@property selectedRow number? nil Currently selected row index
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Table.defineProperty(Table, "selectedRow", {default = nil, type = "number", canTriggerRender = true})
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---@property headerColor color blue Color of the column headers
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Table.defineProperty(Table, "headerColor", {default = colors.blue, type = "number"})
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---@property selectedColor color lightBlue Background color of selected row
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Table.defineProperty(Table, "selectedColor", {default = colors.lightBlue, type = "number"})
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---@property gridColor color gray Color of grid lines
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Table.defineProperty(Table, "gridColor", {default = colors.gray, type = "number"})
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---@property sortColumn number? nil Currently sorted column index
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Table.defineProperty(Table, "sortColumn", {default = nil, type = "number"})
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---@property sortDirection string "asc" Sort direction ("asc" or "desc")
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Table.defineProperty(Table, "sortDirection", {default = "asc", type = "string"})
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---@property scrollOffset number 0 Current scroll position
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Table.defineProperty(Table, "scrollOffset", {default = 0, type = "number", canTriggerRender = true})
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Table.defineEvent(Table, "mouse_click")
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Table.defineEvent(Table, "mouse_scroll")
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--- Creates a new Table instance
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--- @shortDescription Creates a new Table instance
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--- @return Table self The newly created Table instance
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--- @private
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function Table.new()
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local self = setmetatable({}, Table):__init()
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self.set("width", 30)
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self.set("height", 10)
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self.set("z", 5)
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return self
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end
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--- @shortDescription Initializes the Table instance
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--- @param props table The properties to initialize the element with
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--- @param basalt table The basalt instance
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--- @return Table self The initialized instance
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--- @protected
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function Table:init(props, basalt)
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VisualElement.init(self, props, basalt)
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self.set("type", "Table")
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return self
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end
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--- Sorts the table data by column
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--- @shortDescription Sorts the table data by the specified column
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--- @param columnIndex number The index of the column to sort by
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--- @return Table self The Table instance
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function Table:sortData(columnIndex)
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local data = self.get("data")
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local direction = self.get("sortDirection")
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table.sort(data, function(a, b)
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if direction == "asc" then
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return a[columnIndex] < b[columnIndex]
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else
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return a[columnIndex] > b[columnIndex]
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end
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end)
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self.set("data", data)
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return self
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end
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--- @shortDescription Handles header clicks for sorting and row selection
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--- @param button number The button that was clicked
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--- @param x number The x position of the click
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--- @param y number The y position of the click
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--- @return boolean handled Whether the event was handled
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--- @protected
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function Table:mouse_click(button, x, y)
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if not VisualElement.mouse_click(self, button, x, y) then return false end
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local relX, relY = self:getRelativePosition(x, y)
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if relY == 1 then
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local currentX = 1
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for i, col in ipairs(self.get("columns")) do
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if relX >= currentX and relX < currentX + col.width then
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if self.get("sortColumn") == i then
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self.set("sortDirection", self.get("sortDirection") == "asc" and "desc" or "asc")
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else
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self.set("sortColumn", i)
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self.set("sortDirection", "asc")
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end
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self:sortData(i)
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break
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end
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currentX = currentX + col.width
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end
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end
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if relY > 1 then
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local rowIndex = relY - 2 + self.get("scrollOffset")
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if rowIndex >= 0 and rowIndex < #self.get("data") then
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self.set("selectedRow", rowIndex + 1)
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end
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end
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return true
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end
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--- @shortDescription Handles scrolling through the table data
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--- @param direction number The scroll direction (-1 up, 1 down)
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--- @param x number The x position of the scroll
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--- @param y number The y position of the scroll
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--- @return boolean handled Whether the event was handled
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--- @protected
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function Table:mouse_scroll(direction, x, y)
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local data = self.get("data")
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local height = self.get("height")
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local visibleRows = height - 2
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local maxScroll = math.max(0, #data - visibleRows + 1)
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local newOffset = math.min(maxScroll, math.max(0, self.get("scrollOffset") + direction))
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self.set("scrollOffset", newOffset)
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return true
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end
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--- @shortDescription Renders the table with headers, data and scrollbar
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--- @protected
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function Table:render()
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VisualElement.render(self)
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local columns = self.get("columns")
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local data = self.get("data")
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local selected = self.get("selectedRow")
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local sortCol = self.get("sortColumn")
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local scrollOffset = self.get("scrollOffset")
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local height = self.get("height")
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local currentX = 1
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for i, col in ipairs(columns) do
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local text = col.name
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if i == sortCol then
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text = text .. (self.get("sortDirection") == "asc" and "\30" or "\31")
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end
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self:textFg(currentX, 1, text:sub(1, col.width), self.get("headerColor"))
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currentX = currentX + col.width
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end
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local visibleRows = height - 2
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for y = 2, height do
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local rowIndex = y - 2 + scrollOffset
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local rowData = data[rowIndex + 1]
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if rowData and (rowIndex + 1) <= #data then
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currentX = 1
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local bg = (rowIndex + 1) == selected and self.get("selectedColor") or self.get("background")
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for i, col in ipairs(columns) do
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local cellText = rowData[i] or ""
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local paddedText = cellText .. string.rep(" ", col.width - #cellText)
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self:blit(currentX, y, paddedText,
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string.rep(tHex[self.get("foreground")], col.width),
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string.rep(tHex[bg], col.width))
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currentX = currentX + col.width
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end
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else
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self:blit(1, y, string.rep(" ", self.get("width")),
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string.rep(tHex[self.get("foreground")], self.get("width")),
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string.rep(tHex[self.get("background")], self.get("width")))
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end
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end
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if #data > height - 2 then
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local scrollbarHeight = height - 2
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local thumbSize = math.max(1, math.floor(scrollbarHeight * (height - 2) / #data))
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local maxScroll = #data - (height - 2) + 1
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local scrollPercent = scrollOffset / maxScroll
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local thumbPos = 2 + math.floor(scrollPercent * (scrollbarHeight - thumbSize))
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if scrollOffset >= maxScroll then
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thumbPos = height - thumbSize
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end
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for y = 2, height do
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self:blit(self.get("width"), y, "\127", tHex[colors.gray], tHex[colors.gray])
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end
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for y = thumbPos, math.min(height, thumbPos + thumbSize - 1) do
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self:blit(self.get("width"), y, "\127", tHex[colors.white], tHex[colors.white])
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end
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end
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end
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return Table |