1 files changed, 148 insertions, 0 deletions
diff --git a/script/progress.lua b/script/progress.lua
new file mode 100644
index 00000000..066b5d76
--- /dev/null
+++ b/script/progress.lua
@@ -0,0 +1,148 @@
+local proto = require 'proto.proto'
+local util  = require 'utility'
+local timer = require "timer"
+
+local nextToken = util.counter()
+
+local m = {}
+
+m.map = {}
+
+---@class progress
+local mt = {}
+mt.__index     = mt
+mt._token      = nil
+mt._title      = nil
+mt._message    = nil
+mt._removed    = false
+mt._clock      = 0.0
+mt._delay      = 1.0
+mt._percentage = nil
+mt._showed     = false
+mt._dirty      = true
+mt._updated    = 0.0
+
+---移除进度条
+function mt:remove()
+    if self._removed then
+        return
+    end
+    self._removed = true
+    local token = self._token
+    m.map[token] = nil
+    if self._showed then
+        self._showed = false
+        proto.notify('$/progress', {
+            token = token,
+            value = {
+                kind = 'end',
+            }
+        })
+        log.info('Remove progress:', token, self._title)
+    end
+end
+
+---设置描述
+---@param message string # 描述
+function mt:setMessage(message)
+    if self._message == message then
+        return
+    end
+    self._message = message
+    self._dirty   = true
+    self:_update()
+end
+
+---设置百分比
+---@param per number # 百分比（1-100）
+function mt:setPercentage(per)
+    if self._percentage == per then
+        return
+    end
+    self._percentage = math.floor(per)
+    self._dirty      = true
+    self:_update()
+end
+
+function mt:_update()
+    if self._removed then
+        return
+    end
+    if not self._showed then
+        return
+    end
+    if not self._dirty then
+        return
+    end
+    if os.clock() - self._updated < 0.05 then
+        return
+    end
+    self._dirty = false
+    self._updated = os.clock()
+    proto.notify('$/progress', {
+        token = self._token,
+        value = {
+            kind        = 'report',
+            cancellable = false,
+            message     = self._message,
+            percentage  = self._percentage,
+        }
+    })
+    log.info('Report progress:', self._token, self._title, self._message)
+end
+
+function mt:__close()
+    log.info('Close progress:', self._token, self._message)
+    self:remove()
+end
+
+function m.update()
+    local clock = os.clock()
+    ---@param prog progress
+    for token, prog in pairs(m.map) do
+        if prog._removed then
+            goto CONTINUE
+        end
+        if  not prog._showed
+        and prog._clock + prog._delay <= clock then
+            prog._showed = true
+            proto.request('window/workDoneProgress/create', {
+                token = token,
+            })
+            proto.notify('$/progress', {
+                token = token,
+                value = {
+                    kind        = 'begin',
+                    title       = prog._title,
+                    cancellable = false,
+                    message     = prog._message,
+                    percentage  = prog._percentage,
+                }
+            })
+            log.info('Create progress:', token, prog._title)
+            goto CONTINUE
+        end
+        prog:_update()
+        ::CONTINUE::
+    end
+end
+
+---创建一个进度条
+---@param title string # 标题
+---@param delay number # 至少经过这么久之后才会显示出来
+function m.create(title, delay)
+    local prog = setmetatable({
+        _token = nextToken(),
+        _title = title,
+        _clock = os.clock(),
+        _delay = delay,
+    }, mt)
+
+    m.map[prog._token] = prog
+
+    return prog
+end
+
+timer.loop(0.1, m.update)
+
+return m