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--!A cross-platform build utility based on Lua
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015-present, Xmake Open Source Community.
--
-- @author ruki
-- @file button.lua
--
-- load modules
local log = require("ui/log")
local view = require("ui/view")
local event = require("ui/event")
local label = require("ui/label")
local action = require("ui/action")
local curses = require("ui/curses")
-- define module
local button = button or label()
-- init button
function button:init(name, bounds, text, on_action)
-- init label
label.init(self, name, bounds, text)
-- mark as selectable
self:option_set("selectable", true)
-- show cursor
self:cursor_show(true)
-- init actions
self:option_set("mouseable", true)
self:action_set(action.ac_on_enter, on_action)
self:action_set(action.ac_on_clicked, function (v)
v:action_on(action.ac_on_enter)
return true
end)
end
-- draw button
function button:on_draw(transparent)
-- draw background
view.on_draw(self, transparent)
-- strip text string
local str = self:text()
if str and #str > 0 then
str = string.sub(str, 1, self:width())
end
if not str or #str == 0 then
return
end
-- get the text attribute value
local textattr = self:textattr_val()
-- selected?
if self:state("selected") and self:state("focused") then
textattr = {textattr, "reverse"}
end
-- draw text
self:canvas():attr(textattr):move(0, 0):putstr(str)
end
-- on event
function button:on_event(e)
-- selected?
if not self:state("selected") then
return
end
-- enter this button?
if e.type == event.ev_keyboard then
if e.key_name == "Enter" then
self:action_on(action.ac_on_enter)
return true
end
end
end
-- set state
function button:state_set(name, enable)
if name == "focused" and self:state(name) ~= enable then
self:invalidate()
end
return view.state_set(self, name, enable)
end
-- return module
return button
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