832 lines
20 KiB
Lua
832 lines
20 KiB
Lua
-- Simple widgets for screens
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local _ENV = mkmodule('gui.widgets')
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local gui = require('gui')
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local utils = require('utils')
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local dscreen = dfhack.screen
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local function show_view(view,vis)
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if view then
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view.visible = vis
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end
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end
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local function getval(obj)
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if type(obj) == 'function' then
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return obj()
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else
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return obj
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end
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end
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local function map_opttab(tab,idx)
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if tab then
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return tab[idx]
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else
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return idx
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end
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end
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------------
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-- Widget --
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------------
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Widget = defclass(Widget, gui.View)
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Widget.ATTRS {
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frame = DEFAULT_NIL,
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frame_inset = DEFAULT_NIL,
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frame_background = DEFAULT_NIL,
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}
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function Widget:computeFrame(parent_rect)
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local sw, sh = parent_rect.width, parent_rect.height
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return gui.compute_frame_body(sw, sh, self.frame, self.frame_inset)
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end
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function Widget:onRenderFrame(dc, rect)
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if self.frame_background then
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dc:fill(rect, self.frame_background)
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end
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end
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-----------
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-- Panel --
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-----------
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Panel = defclass(Panel, Widget)
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Panel.ATTRS {
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on_render = DEFAULT_NIL,
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on_layout = DEFAULT_NIL,
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}
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function Panel:init(args)
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self:addviews(args.subviews)
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end
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function Panel:onRenderBody(dc)
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if self.on_render then self.on_render(dc) end
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end
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function Panel:postComputeFrame(body)
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if self.on_layout then self.on_layout(body) end
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end
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-----------
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-- Pages --
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-----------
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Pages = defclass(Pages, Panel)
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function Pages:init(args)
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for _,v in ipairs(self.subviews) do
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v.visible = false
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end
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self:setSelected(args.selected or 1)
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end
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function Pages:setSelected(idx)
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if type(idx) ~= 'number' then
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local key = idx
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if type(idx) == 'string' then
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key = self.subviews[key]
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end
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idx = utils.linear_index(self.subviews, key)
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if not idx then
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error('Unknown page: '..key)
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end
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end
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show_view(self.subviews[self.selected], false)
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self.selected = math.min(math.max(1, idx), #self.subviews)
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show_view(self.subviews[self.selected], true)
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end
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function Pages:getSelected()
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return self.selected, self.subviews[self.selected]
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end
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function Pages:getSelectedPage()
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return self.subviews[self.selected]
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end
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----------------
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-- Edit field --
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----------------
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EditField = defclass(EditField, Widget)
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EditField.ATTRS{
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text = '',
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text_pen = DEFAULT_NIL,
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on_char = DEFAULT_NIL,
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on_change = DEFAULT_NIL,
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on_submit = DEFAULT_NIL,
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key = DEFAULT_NIL,
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}
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function EditField:onRenderBody(dc)
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dc:pen(self.text_pen or COLOR_LIGHTCYAN):fill(0,0,dc.width-1,0)
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local cursor = '_'
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if not self.active or gui.blink_visible(300) then
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cursor = ' '
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end
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local txt = self.text .. cursor
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local dx = dc.x
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if self.key then
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dc:key_string(self.key, '')
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end
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dx = dc.x - dx
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local max_width = dc.width - dx
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if #txt > max_width then
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txt = string.char(27)..string.sub(txt, #txt-max_width+2)
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end
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dc:string(txt)
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end
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function EditField:onInput(keys)
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if self.on_submit and keys.SELECT then
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self.on_submit(self.text)
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return true
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elseif keys._STRING then
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local old = self.text
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if keys._STRING == 0 then
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self.text = string.sub(old, 1, #old-1)
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else
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local cv = string.char(keys._STRING)
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if not self.on_char or self.on_char(cv, old) then
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self.text = old .. cv
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end
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end
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if self.on_change and self.text ~= old then
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self.on_change(self.text, old)
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end
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return true
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end
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end
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-----------
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-- Label --
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-----------
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function parse_label_text(obj)
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local text = obj.text or {}
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if type(text) ~= 'table' then
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text = { text }
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end
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local curline = nil
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local out = { }
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local active = nil
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local idtab = nil
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for _,v in ipairs(text) do
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local vv
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if type(v) == 'string' then
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vv = utils.split_string(v, NEWLINE)
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else
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vv = { v }
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end
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for i = 1,#vv do
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local cv = vv[i]
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if i > 1 then
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if not curline then
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table.insert(out, {})
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end
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curline = nil
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end
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if cv ~= '' then
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if not curline then
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curline = {}
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table.insert(out, curline)
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end
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if type(cv) == 'string' then
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table.insert(curline, { text = cv })
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else
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table.insert(curline, cv)
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if cv.on_activate then
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active = active or {}
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table.insert(active, cv)
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end
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if cv.id then
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idtab = idtab or {}
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idtab[cv.id] = cv
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end
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end
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end
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end
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end
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obj.text_lines = out
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obj.text_active = active
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obj.text_ids = idtab
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end
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local function is_disabled(token)
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return (token.disabled ~= nil and getval(token.disabled)) or
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(token.enabled ~= nil and not getval(token.enabled))
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end
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function render_text(obj,dc,x0,y0,pen,dpen,disabled)
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local width = 0
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for iline,line in ipairs(obj.text_lines) do
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local x = 0
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if dc then
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dc:seek(x+x0,y0+iline-1)
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end
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for _,token in ipairs(line) do
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token.line = iline
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token.x1 = x
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if token.gap then
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x = x + token.gap
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if dc then
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dc:advance(token.gap)
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end
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end
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if token.tile then
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x = x + 1
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if dc then
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dc:char(nil, token.tile)
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end
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end
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if token.text or token.key then
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local text = ''..(getval(token.text) or '')
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local keypen = dfhack.pen.parse(token.key_pen or COLOR_LIGHTGREEN)
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if dc then
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local tpen = getval(token.pen)
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if disabled or is_disabled(token) then
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dc:pen(getval(token.dpen) or tpen or dpen)
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if keypen.fg ~= COLOR_BLACK then
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keypen.bold = false
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end
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else
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dc:pen(tpen or pen)
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end
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end
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local width = getval(token.width)
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local padstr
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if width then
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x = x + width
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if #text > width then
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text = string.sub(text,1,width)
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else
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if token.pad_char then
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padstr = string.rep(token.pad_char,width-#text)
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end
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if dc and token.rjustify then
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if padstr then dc:string(padstr) else dc:advance(width-#text) end
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end
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end
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else
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x = x + #text
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end
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if token.key then
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local keystr = gui.getKeyDisplay(token.key)
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local sep = token.key_sep or ''
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x = x + #keystr
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if sep == '()' then
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if dc then
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dc:string(text)
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dc:string(' ('):string(keystr,keypen):string(')')
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end
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x = x + 3
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else
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if dc then
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dc:string(keystr,keypen):string(sep):string(text)
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end
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x = x + #sep
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end
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else
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if dc then
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dc:string(text)
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end
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end
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if width and dc and not token.rjustify then
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if padstr then dc:string(padstr) else dc:advance(width-#text) end
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end
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end
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token.x2 = x
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end
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width = math.max(width, x)
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end
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obj.text_width = width
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end
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function check_text_keys(self, keys)
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if self.text_active then
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for _,item in ipairs(self.text_active) do
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if item.key and keys[item.key] and not is_disabled(item) then
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item.on_activate()
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return true
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end
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end
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end
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end
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Label = defclass(Label, Widget)
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Label.ATTRS{
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text_pen = COLOR_WHITE,
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text_dpen = COLOR_DARKGREY, -- disabled
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text_hpen = DEFAULT_NIL, -- highlight - default is text_pen with reversed brightness
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disabled = DEFAULT_NIL,
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enabled = DEFAULT_NIL,
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auto_height = true,
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auto_width = false,
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on_click = DEFAULT_NIL,
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on_rclick = DEFAULT_NIL,
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}
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function Label:init(args)
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self:setText(args.text)
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if not self.text_hpen then
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self.text_hpen = ((tonumber(self.text_pen) or tonumber(self.text_pen.fg) or 0) + 8) % 16
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end
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end
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function Label:setText(text)
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self.text = text
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parse_label_text(self)
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if self.auto_height then
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self.frame = self.frame or {}
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self.frame.h = self:getTextHeight()
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end
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end
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function Label:preUpdateLayout()
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if self.auto_width then
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self.frame = self.frame or {}
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self.frame.w = self:getTextWidth()
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end
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end
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function Label:itemById(id)
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if self.text_ids then
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return self.text_ids[id]
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end
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end
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function Label:getTextHeight()
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return #self.text_lines
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end
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function Label:getTextWidth()
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render_text(self)
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return self.text_width
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end
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function Label:onRenderBody(dc)
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local text_pen = self.text_pen
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if self:getMousePos() and (self.on_click or self.on_rclick) then
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text_pen = self.text_hpen
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end
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render_text(self,dc,0,0,text_pen,self.text_dpen,is_disabled(self))
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end
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function Label:onInput(keys)
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if not is_disabled(self) then
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if keys._MOUSE_L_DOWN and self:getMousePos() and self.on_click then
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self:on_click()
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end
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if keys._MOUSE_R_DOWN and self:getMousePos() and self.on_rclick then
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self:on_rclick()
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end
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return check_text_keys(self, keys)
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end
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end
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----------
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-- List --
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----------
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List = defclass(List, Widget)
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STANDARDSCROLL = {
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STANDARDSCROLL_UP = -1,
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STANDARDSCROLL_DOWN = 1,
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STANDARDSCROLL_PAGEUP = '-page',
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STANDARDSCROLL_PAGEDOWN = '+page',
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}
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SECONDSCROLL = {
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SECONDSCROLL_UP = -1,
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SECONDSCROLL_DOWN = 1,
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SECONDSCROLL_PAGEUP = '-page',
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SECONDSCROLL_PAGEDOWN = '+page',
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}
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List.ATTRS{
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text_pen = COLOR_CYAN,
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cursor_pen = COLOR_LIGHTCYAN,
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inactive_pen = DEFAULT_NIL,
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on_select = DEFAULT_NIL,
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on_submit = DEFAULT_NIL,
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on_submit2 = DEFAULT_NIL,
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row_height = 1,
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scroll_keys = STANDARDSCROLL,
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icon_width = DEFAULT_NIL,
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}
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function List:init(info)
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self.page_top = 1
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self.page_size = 1
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if info.choices then
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self:setChoices(info.choices, info.selected)
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else
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self.choices = {}
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self.selected = 1
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end
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end
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function List:setChoices(choices, selected)
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self.choices = {}
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for i,v in ipairs(choices or {}) do
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local l = utils.clone(v);
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if type(v) ~= 'table' then
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l = { text = v }
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else
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l.text = v.text or v.caption or v[1]
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end
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parse_label_text(l)
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self.choices[i] = l
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end
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self:setSelected(selected)
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end
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function List:setSelected(selected)
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self.selected = selected or self.selected or 1
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self:moveCursor(0, true)
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return self.selected
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end
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function List:getChoices()
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return self.choices
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end
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function List:getSelected()
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if #self.choices > 0 then
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return self.selected, self.choices[self.selected]
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end
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end
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function List:getContentWidth()
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local width = 0
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for i,v in ipairs(self.choices) do
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render_text(v)
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local roww = v.text_width
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if v.key then
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roww = roww + 3 + #gui.getKeyDisplay(v.key)
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end
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width = math.max(width, roww)
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end
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return width + (self.icon_width or 0)
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end
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function List:getContentHeight()
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return #self.choices * self.row_height
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end
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function List:postComputeFrame(body)
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self.page_size = math.max(1, math.floor(body.height / self.row_height))
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self:moveCursor(0)
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end
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function List:moveCursor(delta, force_cb)
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local page = math.max(1, self.page_size)
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local cnt = #self.choices
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if cnt < 1 then
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self.page_top = 1
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self.selected = 1
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if force_cb and self.on_select then
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self.on_select(nil,nil)
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end
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return
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end
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local off = self.selected+delta-1
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local ds = math.abs(delta)
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if ds > 1 then
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if off >= cnt+ds-1 then
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off = 0
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else
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off = math.min(cnt-1, off)
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end
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if off <= -ds then
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off = cnt-1
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else
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off = math.max(0, off)
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end
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end
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self.selected = 1 + off % cnt
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self.page_top = 1 + page * math.floor((self.selected-1) / page)
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if (force_cb or delta ~= 0) and self.on_select then
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self.on_select(self:getSelected())
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end
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end
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function List:onRenderBody(dc)
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local choices = self.choices
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local top = self.page_top
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local iend = math.min(#choices, top+self.page_size-1)
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local iw = self.icon_width
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local function paint_icon(icon, obj)
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if type(icon) ~= 'string' then
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dc:char(nil,icon)
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else
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if current then
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dc:string(icon, obj.icon_pen or self.icon_pen or cur_pen)
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else
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dc:string(icon, obj.icon_pen or self.icon_pen or cur_dpen)
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end
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end
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end
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for i = top,iend do
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local obj = choices[i]
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local current = (i == self.selected)
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local cur_pen = self.cursor_pen
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local cur_dpen = self.text_pen
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local active_pen = current and cur_pen or cur_dpen
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if not self.active then
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cur_pen = self.inactive_pen or self.cursor_pen
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end
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local y = (i - top)*self.row_height
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local icon = getval(obj.icon)
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if iw and icon then
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dc:seek(0, y):pen(active_pen)
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paint_icon(icon, obj)
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end
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render_text(obj, dc, iw or 0, y, cur_pen, cur_dpen, not current)
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local ip = dc.width
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if obj.key then
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local keystr = gui.getKeyDisplay(obj.key)
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ip = ip-2-#keystr
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dc:seek(ip,y):pen(self.text_pen)
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dc:string('('):string(keystr,COLOR_LIGHTGREEN):string(')')
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end
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if icon and not iw then
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|
dc:seek(ip-1,y):pen(active_pen)
|
|
paint_icon(icon, obj)
|
|
end
|
|
end
|
|
end
|
|
|
|
function List:submit()
|
|
if self.on_submit and #self.choices > 0 then
|
|
self.on_submit(self:getSelected())
|
|
end
|
|
end
|
|
|
|
function List:submit2()
|
|
if self.on_submit2 and #self.choices > 0 then
|
|
self.on_submit2(self:getSelected())
|
|
end
|
|
end
|
|
|
|
function List:onInput(keys)
|
|
if self.on_submit and keys.SELECT then
|
|
self:submit()
|
|
return true
|
|
elseif self.on_submit2 and keys.SEC_SELECT then
|
|
self:submit2()
|
|
return true
|
|
else
|
|
for k,v in pairs(self.scroll_keys) do
|
|
if keys[k] then
|
|
if v == '+page' then
|
|
v = self.page_size
|
|
elseif v == '-page' then
|
|
v = -self.page_size
|
|
end
|
|
|
|
self:moveCursor(v)
|
|
return true
|
|
end
|
|
end
|
|
|
|
for i,v in ipairs(self.choices) do
|
|
if v.key and keys[v.key] then
|
|
self:setSelected(i)
|
|
self:submit()
|
|
return true
|
|
end
|
|
end
|
|
|
|
local current = self.choices[self.selected]
|
|
if current then
|
|
return check_text_keys(current, keys)
|
|
end
|
|
end
|
|
end
|
|
|
|
-------------------
|
|
-- Filtered List --
|
|
-------------------
|
|
|
|
FilteredList = defclass(FilteredList, Widget)
|
|
|
|
FilteredList.ATTRS {
|
|
edit_below = false,
|
|
edit_key = DEFAULT_NIL,
|
|
}
|
|
|
|
function FilteredList:init(info)
|
|
self.edit = EditField{
|
|
text_pen = info.edit_pen or info.cursor_pen,
|
|
frame = { l = info.icon_width, t = 0, h = 1 },
|
|
on_change = self:callback('onFilterChange'),
|
|
on_char = self:callback('onFilterChar'),
|
|
key = self.edit_key,
|
|
active = (self.edit_key == nil),
|
|
}
|
|
self.list = List{
|
|
frame = { t = 2 },
|
|
text_pen = info.text_pen,
|
|
cursor_pen = info.cursor_pen,
|
|
inactive_pen = info.inactive_pen,
|
|
icon_pen = info.icon_pen,
|
|
row_height = info.row_height,
|
|
scroll_keys = info.scroll_keys,
|
|
icon_width = info.icon_width,
|
|
}
|
|
if self.edit_below then
|
|
self.edit.frame = { l = info.icon_width, b = 0, h = 1 }
|
|
self.list.frame = { t = 0, b = 2 }
|
|
end
|
|
if info.on_select then
|
|
self.list.on_select = function()
|
|
return info.on_select(self:getSelected())
|
|
end
|
|
end
|
|
if info.on_submit then
|
|
self.list.on_submit = function()
|
|
return info.on_submit(self:getSelected())
|
|
end
|
|
end
|
|
if info.on_submit2 then
|
|
self.list.on_submit2 = function()
|
|
return info.on_submit2(self:getSelected())
|
|
end
|
|
end
|
|
self.not_found = Label{
|
|
visible = true,
|
|
text = info.not_found_label or 'No matches',
|
|
text_pen = COLOR_LIGHTRED,
|
|
frame = { l = info.icon_width, t = self.list.frame.t },
|
|
}
|
|
self:addviews{ self.edit, self.list, self.not_found }
|
|
if info.choices then
|
|
self:setChoices(info.choices, info.selected)
|
|
else
|
|
self.choices = {}
|
|
end
|
|
end
|
|
|
|
function FilteredList:onInput(keys)
|
|
if self.edit_key and keys[self.edit_key] and not self.edit.active then
|
|
self.edit.active = true
|
|
elseif keys.LEAVESCREEN and self.edit.active then
|
|
self.edit.active = false
|
|
else
|
|
self:inputToSubviews(keys)
|
|
end
|
|
end
|
|
|
|
function FilteredList:getChoices()
|
|
return self.choices
|
|
end
|
|
|
|
function FilteredList:getVisibleChoices()
|
|
return self.list.choices
|
|
end
|
|
|
|
function FilteredList:setChoices(choices, pos)
|
|
choices = choices or {}
|
|
self.choices = choices
|
|
self.edit.text = ''
|
|
self.list:setChoices(choices, pos)
|
|
self.not_found.visible = (#choices == 0)
|
|
end
|
|
|
|
function FilteredList:submit()
|
|
return self.list:submit()
|
|
end
|
|
|
|
function FilteredList:submit2()
|
|
return self.list:submit2()
|
|
end
|
|
|
|
function FilteredList:canSubmit()
|
|
return not self.not_found.visible
|
|
end
|
|
|
|
function FilteredList:getSelected()
|
|
local i,v = self.list:getSelected()
|
|
if i then
|
|
return map_opttab(self.choice_index, i), v
|
|
end
|
|
end
|
|
|
|
function FilteredList:getContentWidth()
|
|
return self.list:getContentWidth()
|
|
end
|
|
|
|
function FilteredList:getContentHeight()
|
|
return self.list:getContentHeight() + 2
|
|
end
|
|
|
|
function FilteredList:getFilter()
|
|
return self.edit.text, self.list.choices
|
|
end
|
|
|
|
function FilteredList:setFilter(filter, pos)
|
|
local choices = self.choices
|
|
local cidx = nil
|
|
|
|
filter = filter or ''
|
|
self.edit.text = filter
|
|
|
|
if filter ~= '' then
|
|
local tokens = utils.split_string(filter, ' ')
|
|
local ipos = pos
|
|
|
|
choices = {}
|
|
cidx = {}
|
|
pos = nil
|
|
|
|
for i,v in ipairs(self.choices) do
|
|
local ok = true
|
|
local search_key = v.search_key or v.text
|
|
for _,key in ipairs(tokens) do
|
|
if key ~= '' and not string.match(search_key, '%f[^%s\x00]'..key) then
|
|
ok = false
|
|
break
|
|
end
|
|
end
|
|
if ok then
|
|
table.insert(choices, v)
|
|
cidx[#choices] = i
|
|
if ipos == i then
|
|
pos = #choices
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
self.choice_index = cidx
|
|
self.list:setChoices(choices, pos)
|
|
self.not_found.visible = (#choices == 0)
|
|
end
|
|
|
|
function FilteredList:onFilterChange(text)
|
|
self:setFilter(text)
|
|
end
|
|
|
|
local bad_chars = {
|
|
['%'] = true, ['.'] = true, ['+'] = true, ['*'] = true,
|
|
['['] = true, [']'] = true, ['('] = true, [')'] = true,
|
|
}
|
|
|
|
function FilteredList:onFilterChar(char, text)
|
|
if bad_chars[char] then
|
|
return false
|
|
end
|
|
if char == ' ' then
|
|
return string.match(text, '%S$')
|
|
end
|
|
return true
|
|
end
|
|
|
|
return _ENV
|