Gammon Forum

<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE muclient>

<!-- Bits of this plugin and ideas were borrowed and remixed from the MUSHclient community. http://www.gammon.com.au/forum/?id=9385 and others. -->
<!-- Modifications for Aardwolf and extra awesome sauce added by Fiendish with help from Orogan -->
<!-- Adapated by Nick Gammon for Smaug and similar MUDs -->

<muclient>
    <plugin
    name="Chat_Capture_Miniwindow"
    author="Fiendish"
    id="565dae21eb816a2fdb8d50f9"
    language="Lua"
    purpose="Move chats to a miniwindow"
    date_written="2010-04-04"
    date_modified="2011-01-05"
    requires="4.52"
    version="2.4"
    save_state="y"
    >
    
<description trim="y">
USAGE:

  chats echo on    : echo chats in main window
  chats echo off   : do not echo chats
  chats show       : show chats window
  chats hide       : hide chats window
  
  LH-click a line to copy it to the clipboard
  RH-click main window to see menu of options
  
  Click title bar to drag window.
</description>
  
</plugin>

<triggers>
    <trigger
    enabled="y"
    match="You say '*'"
    script="chats"
    omit_from_output="y"
    sequence="100"
    ></trigger>

    <trigger
    enabled="y"
    match="You tell * '*'"
    script="chats"
    omit_from_output="y"
    sequence="100"
    ></trigger>

    <trigger
    enabled="y"
    match="You OOC '*'"
    script="chats"
    omit_from_output="y"
    sequence="100"
    ></trigger>
</triggers>

<aliases>
    <alias
    script="chat_echo"
    match="^chats echo( on| off)?$"
    enabled="y"
    regexp="y"
    sequence="100"
    ignore_case="y"
    ></alias>

    <alias
    script="chat_show"
    match="chats show"
    enabled="y"
    sequence="100"
    ignore_case="y"
    ></alias>

    <alias
    script="chat_hide"
    match="chats hide"
    enabled="y"
    sequence="100"
    ignore_case="y"
    ></alias>
        
</aliases>

<script>
<![CDATA[

require "movewindow"  -- load the movewindow.lua module
require "copytable"

BODY_FONT_NAME = "Dina"
BODY_FONT_SIZE = 8
SCROLL_BAR_WIDTH = 15
MAX_LINES = 10000 -- how many lines to store in scrollback

-- date_format = "[%d %b %H:%M:%S] "        -- [30 Aug 13:29:49]   date and time 24 hour
-- date_format = "[%d %b %I:%M:%S%p] "  -- [30 Aug 01:20:12PM]     date and time 12 hour
-- date_format = "[%H:%M:%S] "          -- [13:29:08]          time 24 hour
-- date_format = "[%X] "                  -- [1:22:06 PM]            time 12 hour

TIMESTAMP_TEXT_COLOUR = "white"
TIMESTAMP_BACK_COLOUR = "black"

-- doing it this way makes them default to true the first time around
timestamp = not (GetVariable("timestamp") == "false")
echo = not (GetVariable("echo") == "false")

date_format = GetVariable("date_format")
WINDOW_WIDTH = tonumber(GetVariable("WINDOW_WIDTH"))
WINDOW_HEIGHT = tonumber(GetVariable("WINDOW_HEIGHT"))

-- offset of text from edge
TEXT_INSET = 5

-- where to store the chat line
lines = {}  -- table of recent chat lines
rawlines = {}

lineStart = ""
lineEnd = ""
WINDOW_COLUMNS = ""
WINDOW_LINES = ""

theme = {
    WINDOW_BACKGROUND = ColourNameToRGB ("#000000"), -- for miniwindow body
    WINDOW_BORDER = ColourNameToRGB("#E8E8E8"), -- for miniwindow body
    
    HIGHLIGHT=ColourNameToRGB("#FFFFFF"), -- for 3D surfaces
    FACE=ColourNameToRGB("#D4D0C8"), -- for 3D surfaces
    INNERSHADOW=ColourNameToRGB("#808080"), -- for 3D surfaces
    OUTERSHADOW = ColourNameToRGB("#404040"), -- for 3D surfaces
   
    BACK_FACE = ColourNameToRGB ("#E8E8E8"), -- for contrasting details
    DETAIL = ColourNameToRGB ("#000000"), -- for contrasting details

    TITLE_HEIGHT = 17, -- for miniwindow title area
    SUBTITLE_HEIGHT = 17, -- for miniwindow title area
    TITLE_FONT_NAME = "Dina", -- for miniwindow title area
    TITLE_FONT_SIZE = 8 -- for miniwindow title area
}  -- end theme table


-- replacement for WindowRectOp action 5, which allows for a 3D look while maintaining color theme
-- Requires global theme.HIGHLIGHT, theme.FACE, theme.INNERSHADOW, and theme.OUTERSHADOW rgb colors to be set.
function DrawThemed3DRect(Window, left, top, right, bottom)
    WindowRectOp(Window, miniwin.rect_fill, left, top, right, bottom, theme.FACE)
    WindowLine(Window, left, top, right, top, theme.HIGHLIGHT, 
                miniwin.pen_solid + miniwin.pen_endcap_flat, 1)
    WindowLine(Window, left, top, left, bottom, theme.HIGHLIGHT, 
                miniwin.pen_solid + miniwin.pen_endcap_flat, 1)
    WindowLine(Window, left, bottom-2, right, bottom-2, theme.INNERSHADOW, 
                miniwin.pen_solid + miniwin.pen_endcap_flat, 1)
    WindowLine(Window, right-2, top, right-2, bottom-2, theme.INNERSHADOW, 
                miniwin.pen_solid + miniwin.pen_endcap_flat, 1)
    WindowLine(Window, left, bottom-1, right, bottom-1, theme.OUTERSHADOW, 
                miniwin.pen_solid + miniwin.pen_endcap_flat, 1)
    WindowLine(Window, right-1, top, right-1, bottom-1, theme.OUTERSHADOW, 
                miniwin.pen_solid + miniwin.pen_endcap_flat, 1)    
end

function DrawThemedResizeTag(Window, x1, y1, size)
    local x2, y2 = x1+size, y1+size
    DrawThemed3DRect(Window, x1, y1, x2, y2)
    local m = 2
    local n = 2
    while (x1+m+2 <= x2-3 and y1+n+1 <= y2-4) do
        WindowLine(Window, x1+m+1, y2-4, x2-3, y1+n, theme.HIGHLIGHT, 
                    miniwin.pen_solid, 1)
        WindowLine(Window, x1+m+2, y2-4, x2-3, y1+n+1, theme.INNERSHADOW, 
                    miniwin.pen_solid, 1)
        m = m+3
        n = n+3
    end
end  -- function DrawThemedResizeTag


Win = GetPluginID()
font_height = ""
line_height = ""
windowinfo = ""
startx = ""
starty = ""

function ResizeMoveCallback()
    posx, posy = WindowInfo (Win, 17), WindowInfo (Win, 18)
    if (WindowTextWidth(Win, "titlefont"..Win, "WWWCOMMUNICATION")+2*SCROLL_BAR_WIDTH <= WINDOW_WIDTH+posx-startx) then
        WINDOW_WIDTH = WINDOW_WIDTH+posx-startx
        startx = posx
    end  -- if
    if (3*SCROLL_BAR_WIDTH+10+line_height+theme.TITLE_HEIGHT <= WINDOW_HEIGHT+posy-starty) then
        WINDOW_HEIGHT = WINDOW_HEIGHT+posy-starty
        starty = posy
    end -- if
    init(false)
end -- function ResizeMoveCallback

function ResizeReleaseCallback()
    WINDOW_HEIGHT = theme.TITLE_HEIGHT+(line_height*(WINDOW_LINES-1))+3
    init(true)
end  -- ResizeReleaseCallback

function OnPluginInstall()
    -- Dummy window to get font characteristics
    check (WindowCreate (Win, 0, 0, 1, 1, 0, 0, theme.WINDOW_BACKGROUND) )
    check (WindowFont(Win, "bodyfont"..Win, BODY_FONT_NAME, BODY_FONT_SIZE))
    check (WindowFont(Win, "titlefont"..Win, theme.TITLE_FONT_NAME, theme.TITLE_FONT_SIZE))
    font_height = WindowFontInfo (Win, "bodyfont"..Win, 1) -  WindowFontInfo (Win, "bodyfont"..Win, 4) + 1
    line_height = font_height+1
    font_width = WindowTextWidth (Win, "bodyfont"..Win, "W")
    
    -- install the window movement handler, get back the window position
    windowinfo = movewindow.install (Win, miniwin.pos_top_right, miniwin.create_absolute_location, true)

    -- check for Echo/Timestamp/date_format/window size (in pixels) variables, if not there, set them
    if date_format == nil then
        date_format = "[%d %b %H:%M:%S] "
    end -- if
    if WINDOW_WIDTH == nil then
        WINDOW_WIDTH = (font_width*80)+SCROLL_BAR_WIDTH -- 80 columns
    end
    if WINDOW_HEIGHT == nil then
        WINDOW_HEIGHT = theme.TITLE_HEIGHT+(line_height*6)+2 -- 6 lines
    end -- if
    init(true)
    OnPluginEnable ()  -- do initialization stuff
end -- function OnPluginInstall

function init(firstTime)
    -- how many lines and columns will fit?
    WINDOW_LINES = math.ceil((WINDOW_HEIGHT-theme.TITLE_HEIGHT)/line_height)
    WINDOW_COLUMNS = math.ceil((WINDOW_WIDTH-SCROLL_BAR_WIDTH)/font_width)

    if firstTime then
        WindowCreate(Win, windowinfo.window_left, windowinfo.window_top, WINDOW_WIDTH, WINDOW_HEIGHT, windowinfo.window_mode, windowinfo.window_flags, theme.WINDOW_BACKGROUND)

        -- catch for right-click menu and line selection
        WindowAddHotspot(Win, "textarea", 0, theme.TITLE_HEIGHT, WINDOW_WIDTH-SCROLL_BAR_WIDTH,0, 
            "", "", "MouseDown", "CancelMouseDown", "MouseUp", "", 
            miniwin.cursor_ibeam, 0)
        -- add the drag handler so they can move the window around
        movewindow.add_drag_handler (Win, 0, 0, 0, theme.TITLE_HEIGHT)
        
        -- scroll bar up/down buttons
        WindowAddHotspot(Win, "up", WINDOW_WIDTH-SCROLL_BAR_WIDTH, theme.TITLE_HEIGHT, 0, theme.TITLE_HEIGHT+SCROLL_BAR_WIDTH, 
            "MouseOver", "CancelMouseOver", "MouseDown", "CancelMouseDown", "MouseUp", "", 
            miniwin.cursor_hand, 0)
        WindowAddHotspot(Win, "down", WINDOW_WIDTH-SCROLL_BAR_WIDTH, WINDOW_HEIGHT-(2*SCROLL_BAR_WIDTH), 0, WINDOW_HEIGHT-SCROLL_BAR_WIDTH, 
            "MouseOver", "CancelMouseOver", "MouseDown", "CancelMouseDown", "MouseUp", "", 
            miniwin.cursor_hand, 0)

        -- add the resize widget hotspot
        WindowAddHotspot(Win, "resizer", WINDOW_WIDTH-SCROLL_BAR_WIDTH, WINDOW_HEIGHT-SCROLL_BAR_WIDTH, WINDOW_WIDTH, WINDOW_HEIGHT, 
            "MouseOver", "CancelMouseOver", "MouseDown", "CancelMouseDown", "MouseUp", "", 
            miniwin.cursor_nw_se_arrow, 0)
        WindowDragHandler(Win, "resizer", "ResizeMoveCallback", "ResizeReleaseCallback", 0)    
    else
        WindowResize(Win, WINDOW_WIDTH, WINDOW_HEIGHT, theme.WINDOW_BACKGROUND)
        WindowMoveHotspot(Win, "textarea", 0, theme.TITLE_HEIGHT, WINDOW_WIDTH-SCROLL_BAR_WIDTH, 0)
        WindowMoveHotspot(Win, "up", WINDOW_WIDTH-SCROLL_BAR_WIDTH, theme.TITLE_HEIGHT, 0, theme.TITLE_HEIGHT+SCROLL_BAR_WIDTH)
        WindowMoveHotspot(Win, "down", WINDOW_WIDTH-SCROLL_BAR_WIDTH, WINDOW_HEIGHT-(2*SCROLL_BAR_WIDTH), 0, WINDOW_HEIGHT-SCROLL_BAR_WIDTH)
        WindowMoveHotspot(Win, "resizer", WINDOW_WIDTH-SCROLL_BAR_WIDTH, WINDOW_HEIGHT-SCROLL_BAR_WIDTH, WINDOW_WIDTH, 0)
    end -- if
    WindowShow(Win, true)
    
    if (firstTime == true) then
        lines = {}
        for _,styles in ipairs(rawlines) do 
            fillBuffer(styles)
        end  -- for each line
    end -- if

    lineStart = math.max(1, #lines-WINDOW_LINES+2)
    lineEnd = math.max(1, #lines)
    refresh()
end  -- function init

function OnPluginClose ()
    -- if enabled
    if GetPluginInfo (GetPluginID(), 17) then
        OnPluginDisable()
    end -- if enabled
end -- function OnPluginClose

function OnPluginEnable ()
    WindowShow (Win, true)
end -- function OnPluginEnable

function OnPluginSaveState ()
    -- save window current location for next time  
    SetVariable ("enabled", tostring (GetPluginInfo (GetPluginID(), 17)))
    movewindow.save_state (Win)
    -- save echo/timestamp status
    SetVariable ("echo", tostring (echo))
    SetVariable ("timestamp", tostring (timestamp))
    SetVariable("date_format", date_format)
    SetVariable("WINDOW_WIDTH", WINDOW_WIDTH)
    SetVariable("WINDOW_HEIGHT", WINDOW_HEIGHT)
end -- function OnPluginSaveState

function OnPluginDisable ()
    WindowShow( Win, false )
end -- function OnPluginDisable

-- display one line
function Display_Line (line, styles)
 
  local left    = TEXT_INSET
  local top     = theme.TITLE_HEIGHT + (line * line_height) + 1
  local bottom  = top + line_height
  local font    = "bodyfont" .. Win

  if backfill then
      WindowRectOp (Win, miniwin.rect_fill, 1, top, WINDOW_WIDTH - SCROLL_BAR_WIDTH, bottom, ColourNameToRGB("#333333"))
  end -- backfill
  
  if (styles) then
    for _, style in ipairs (styles) do
      local width = WindowTextWidth (Win, font, style.text) -- get width of text
      local right = left + width
      WindowRectOp (Win, miniwin.rect_fill, left, top, right, bottom, style.backcolour)  -- draw background
      WindowText (Win, font, style.text, left, top, 0, 0, style.textcolour)  -- draw text
      left = left + width  -- advance horizontally
    end -- for each style run        
  end -- if  styles
  
end -- Display_Line


-- display all visible lines
function writeLines()
    for count = lineStart, lineEnd do
        Display_Line( count-lineStart, lines[count][1], false )
    end  -- for each line
    Redraw()

end  -- function writeLines

-- clear and redraw
function refresh()
    WindowRectOp(Win, miniwin.rect_fill, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, theme.WINDOW_BACKGROUND)
    drawStuff()
end  -- function refresh

barPos = ""
barSize = ""
totalSteps = ""

function drawStuff()
    -- draw border
    WindowRectOp (Win, miniwin.rect_frame, 0, 0, 0, 0, theme.WINDOW_BORDER)
    
    -- Title bar
    DrawThemed3DRect(Win, 0, 0, WINDOW_WIDTH, theme.TITLE_HEIGHT)

    -- Title text
    WindowText(Win, "titlefont"..Win, "COMMUNICATION", ((WINDOW_WIDTH)-(7.5*line_height))/2, (theme.TITLE_HEIGHT-line_height)/2, WINDOW_WIDTH, theme.TITLE_HEIGHT, theme.DETAIL, false)

    if #lines >= 1 then
        writeLines()
    end -- if
        
    -- Scrollbar base
    WindowRectOp(Win, miniwin.rect_fill, WINDOW_WIDTH-SCROLL_BAR_WIDTH, theme.TITLE_HEIGHT, WINDOW_WIDTH, WINDOW_HEIGHT, theme.BACK_FACE) -- scroll bar background
    WindowRectOp(Win, miniwin.rect_frame, WINDOW_WIDTH-SCROLL_BAR_WIDTH+1, SCROLL_BAR_WIDTH+theme.TITLE_HEIGHT+1, WINDOW_WIDTH-1, WINDOW_HEIGHT-(2*SCROLL_BAR_WIDTH)-1, theme.DETAIL) -- scroll bar background inset rectangle
    DrawThemed3DRect(Win, WINDOW_WIDTH-SCROLL_BAR_WIDTH, theme.TITLE_HEIGHT, WINDOW_WIDTH, theme.TITLE_HEIGHT+SCROLL_BAR_WIDTH) -- top scroll button
    DrawThemed3DRect(Win, WINDOW_WIDTH-SCROLL_BAR_WIDTH, WINDOW_HEIGHT-(SCROLL_BAR_WIDTH*2), WINDOW_WIDTH, WINDOW_HEIGHT-SCROLL_BAR_WIDTH) -- bottom scroll button
    
    -- draw triangle in up button
    points = string.format ("%i,%i,%i,%i,%i,%i", (WINDOW_WIDTH-SCROLL_BAR_WIDTH)+2, theme.TITLE_HEIGHT+8,(WINDOW_WIDTH-SCROLL_BAR_WIDTH)+6, theme.TITLE_HEIGHT+4,(WINDOW_WIDTH-SCROLL_BAR_WIDTH)+10, theme.TITLE_HEIGHT+8)
    WindowPolygon (Win, points,
        theme.DETAIL, miniwin.pen_solid, 1,   -- pen (solid, width 1)
        theme.DETAIL, miniwin.brush_solid, --brush (solid)
        true, --close
        false)  --alt fill

    -- draw triangle in down button    
    points = string.format ("%i,%i,%i,%i,%i,%i", (WINDOW_WIDTH-SCROLL_BAR_WIDTH)+2, (WINDOW_HEIGHT-SCROLL_BAR_WIDTH)-10,(WINDOW_WIDTH-SCROLL_BAR_WIDTH)+6, (WINDOW_HEIGHT-SCROLL_BAR_WIDTH)-6, (WINDOW_WIDTH-SCROLL_BAR_WIDTH)+10,(WINDOW_HEIGHT-SCROLL_BAR_WIDTH)-10)
    WindowPolygon (Win, points,
        theme.DETAIL, miniwin.pen_solid, 1,   -- pen (solid, width 1)
        theme.DETAIL, miniwin.brush_solid, --brush (solid)
        true, --close
        false) --alt fill
    
    -- The scrollbar position indicator
    totalSteps = #lines
    if (totalSteps <= WINDOW_LINES-1) then totalSteps = 1 end
    SCROLL_BAR_HEIGHT = (WINDOW_HEIGHT-(3*SCROLL_BAR_WIDTH)-theme.TITLE_HEIGHT)
    if (not dragscrolling) then
        stepNum = lineStart-1
        barPos = SCROLL_BAR_WIDTH +theme.TITLE_HEIGHT+ ((SCROLL_BAR_HEIGHT/totalSteps) * stepNum)
        barSize = (SCROLL_BAR_HEIGHT/math.max(WINDOW_LINES-1,totalSteps)) * (WINDOW_LINES-1)
        if barSize < 10 then
            barSize = 10
        end
        if barPos+barSize > SCROLL_BAR_WIDTH+theme.TITLE_HEIGHT+SCROLL_BAR_HEIGHT then
            barPos = SCROLL_BAR_WIDTH+theme.TITLE_HEIGHT+SCROLL_BAR_HEIGHT - barSize
        end
        WindowAddHotspot(Win, "scroller", (WINDOW_WIDTH-SCROLL_BAR_WIDTH), barPos, WINDOW_WIDTH, barPos+barSize, 
                        "MouseOver", "CancelMouseOver", "MouseDown", "CancelMouseDown", "MouseUp", "", 
                        miniwin.cursor_hand, 0)
        WindowDragHandler(Win, "scroller", "ScrollerMoveCallback", "ScrollerReleaseCallback", 0)
    end  -- if
    DrawThemed3DRect(Win, WINDOW_WIDTH-SCROLL_BAR_WIDTH, barPos, WINDOW_WIDTH, barPos+barSize)
    
    -- resizer tag
    DrawThemedResizeTag(Win, WINDOW_WIDTH-SCROLL_BAR_WIDTH, WINDOW_HEIGHT-SCROLL_BAR_WIDTH, SCROLL_BAR_WIDTH)
    
    Redraw()
end  -- function drawStuff

function ScrollerMoveCallback(flags, hotspot_id)
    mouseposy = WindowInfo(Win, 18)
    windowtop = WindowInfo(Win, 2)
    barPos = math.max(mouseposy-windowtop+clickdelta, SCROLL_BAR_WIDTH+theme.TITLE_HEIGHT)
    if barPos > WINDOW_HEIGHT-(SCROLL_BAR_WIDTH*2)-barSize then
        barPos = WINDOW_HEIGHT-(SCROLL_BAR_WIDTH*2)-barSize
        lineStart = math.max(1,#lines-WINDOW_LINES+2)
        lineEnd = #lines
    else
        lineStart = math.floor((barPos-SCROLL_BAR_WIDTH-theme.TITLE_HEIGHT)/(SCROLL_BAR_HEIGHT/totalSteps)+1)
        lineEnd = math.min(lineStart + WINDOW_LINES-2, #lines)
    end -- if
    refresh()
end  -- function ScrollerMoveCallback

function ScrollerReleaseCallback(flags, hotspot_id)
    dragscrolling = false
    refresh()
end  -- function ScrollerReleaseCallback

function fillBuffer(rawstyles)
    local avail = 0
    local line_styles
    local beginning = true
    -- keep pulling out styles and trying to fit them on the current line
    local styles = copytable.deep (rawstyles)
    local remove = table.remove
    local insert = table.insert
    while #styles > 0 do
        if avail <= 0 then -- no room available? start new line
            -- remove first line if filled up
            if #lines >= MAX_LINES then
                remove (lines, 1)
            end -- if 
            avail = WINDOW_WIDTH - (TEXT_INSET * 2) - 9
            line_styles = {}
            add_line( line_styles, beginning )
            beginning = false
        end -- line full

        -- get next style, work out how long it is
        local style = remove (styles, 1)
        local width = WindowTextWidth (Win, "bodyfont"..Win, style.text)

        -- if it fits, copy whole style in
        if width <= avail then
            insert (line_styles, style)
            avail = avail - width
        else -- otherwise, have to split style   
            -- look for trailing space (work backwards). remember where space is
            local col = style.length - 1
            local split_col
            -- keep going until out of columns
            while col > 1 do
                width = WindowTextWidth (Win, "bodyfont"..Win, style.text:sub (1, col)) 
                if width <= avail then
                    if not split_col then
                        split_col = col  -- in case no space found, this is where we can split
                    end -- if
                    -- see if space here
                    if style.text:sub (col, col) == " " then
                        split_col = col
                        break
                    end -- if space
                end -- if will now fit
                col = col - 1
            end -- while
          
            -- if we found a place to split, use old style, and make it shorter. Also make a copy and put the rest in that
            if split_col then
                insert (line_styles, style)
                local style_copy = copytable.shallow (style)
                style.text = style.text:sub (1, split_col)
                style.length = split_col 
                style_copy.text = style_copy.text:sub (split_col + 1)
                style_copy.length = #style_copy.text
                insert (styles, 1, style_copy)
            elseif next (line_styles) == nil then
                insert (line_styles, style)
            else
                insert (styles, 1, style)
            end -- if    
            avail = 0  -- now we need to wrap     
        end -- if could not fit whole thing in
    end -- while we still have styles over
end  -- function fillBuffer

-- Main capture routine
function chats (name, line, wildcards, styles)
    
    -- echo in this world as well if the user wants
    if echo then
        for _, v in ipairs (styles) do
            ColourTell (RGBColourToName (v.textcolour),RGBColourToName (v.backcolour),v.text)
        end -- for each style run
        Note ("")  -- wrap up line
    end -- echo wanted

    -- inject timestamp if wanted
    if timestamp then
        local tstamp = os.date (date_format)
        table.insert (styles, 1, {
          text = tstamp,
          textcolour  = ColourNameToRGB (TIMESTAMP_TEXT_COLOUR),
          backcolour = ColourNameToRGB (TIMESTAMP_BACK_COLOUR),
          length = string.len (tstamp),
          style = 0,
        } )
    end -- if
    
    -- store the raw lines for use during resizing
    if #rawlines >= MAX_LINES then
        table.remove(rawlines, 1)
    end
    table.insert(rawlines, styles)
    
    fillBuffer(styles)
    refresh( )
end -- function chats 

function add_line ( line, is_beginning_of_message )
    -- add new line
    table.insert (lines, {line, false} )
    lines[#lines][2] = is_beginning_of_message

    -- advance the count
    if #lines >= WINDOW_LINES then
        lineStart = lineStart + 1
    end -- if
        
    if #lines > 1 then
        lineEnd = lineEnd + 1
    end -- if
end -- function add_line

keepscrolling = false
require "wait"

function scrollbar(calledBy)
    wait.make (function()
        while keepscrolling == true do
            if calledBy == "up" then
                if (lineStart > 1) then
                    lineStart = lineStart - 1
                    lineEnd = lineEnd - 1
                    WindowRectOp(Win, miniwin.rect_draw_edge, (WINDOW_WIDTH-SCROLL_BAR_WIDTH), theme.TITLE_HEIGHT, 0, theme.TITLE_HEIGHT+SCROLL_BAR_WIDTH, 
                        miniwin.rect_edge_sunken,  miniwin.rect_edge_at_all + miniwin.rect_option_fill_middle) -- up arrow pushed
                    points = string.format ("%i,%i,%i,%i,%i,%i", (WINDOW_WIDTH-SCROLL_BAR_WIDTH)+3, theme.TITLE_HEIGHT+9,(WINDOW_WIDTH-SCROLL_BAR_WIDTH)+7, theme.TITLE_HEIGHT+5,(WINDOW_WIDTH-SCROLL_BAR_WIDTH)+11, theme.TITLE_HEIGHT+9)
                    WindowPolygon (Win, points,
                        theme.DETAIL, miniwin.pen_solid, 1, -- pen (solid, width 1)
                        theme.DETAIL, miniwin.brush_solid, -- brush (solid)
                        true, -- close
                        false) -- alt fill
                else
                    keepscrolling = false
                end
            elseif calledBy == "down" then
                if (lineEnd < #lines) then
                    lineStart = lineStart + 1
                    lineEnd = lineEnd + 1
                WindowRectOp(Win, miniwin.rect_draw_edge, (WINDOW_WIDTH-SCROLL_BAR_WIDTH), WINDOW_HEIGHT-(SCROLL_BAR_WIDTH*2), 0, WINDOW_HEIGHT-SCROLL_BAR_WIDTH-1, 
                    miniwin.rect_edge_sunken,  miniwin.rect_edge_at_all + miniwin.rect_option_fill_middle) -- down arrow pushed
                points = string.format ("%i,%i,%i,%i,%i,%i", (WINDOW_WIDTH-SCROLL_BAR_WIDTH)+3, (WINDOW_HEIGHT-SCROLL_BAR_WIDTH)-11,(WINDOW_WIDTH-SCROLL_BAR_WIDTH)+7, (WINDOW_HEIGHT-SCROLL_BAR_WIDTH)-7, (WINDOW_WIDTH-SCROLL_BAR_WIDTH)+11,(WINDOW_HEIGHT-SCROLL_BAR_WIDTH)-11) -- draw triangle in up button
                WindowPolygon (Win, points,
                    theme.DETAIL, miniwin.pen_solid, 1, -- pen (solid, width 1)
                    theme.DETAIL, miniwin.brush_solid, -- brush (solid)
                    true, -- close
                    false) -- alt fill
                else
                    keepscrolling = false
                end
            end -- if
            wait.time(0.1)
            refresh()
        end -- while keepscrolling
    end)  -- wait.make
end  -- function scrollbar

function GetLineText (styles)
  local t = {}
  for _, style in ipairs (styles) do
    table.insert (t, style.text)
  end -- for
  return table.concat (t)
end -- function GetLineText

function GetAllBufferedMessages()
    local t = {}
    for _,styles in ipairs(rawlines) do
      table.insert (t, GetLineText (styles))
    end -- for
    SetClipboard(table.concat(t,"\r\n"))
end -- function GetAllBufferedMessages

function GetBufferedMessage(xpos, ypos)
    windowline = math.floor(((ypos-theme.TITLE_HEIGHT)/line_height)+1)-1
    text = ""
    if (#lines > windowline) then
        local line = windowline+lineStart
        -- go to beginning of message
        while lines[line][2] ~= true and line > 1 do
            line = line - 1
        end -- while
        -- first line
        local styles = copytable.deep(lines[line][1])
        if (line-lineStart+1 > 0) then
            Display_Line (line-lineStart, styles, true)
        end -- if
        text = GetLineText (styles)
        -- remaining lines
        line = line + 1
        while line <= #lines and lines[line][2] ~= true do
            local styles = copytable.deep(lines[line][1])
            if (line-lineStart+1 > 0 and line-lineStart < WINDOW_LINES) then
                Display_Line (line-lineStart, styles, true)
            end
            text = text.. GetLineText (styles)
            line = line + 1
        end -- while
        SetClipboard(text)
    end -- if
    Redraw()
    
end  -- function GetBufferedMessage

function MouseOver(flags, hotspot_id)
    keepscrolling = false
end  -- function MouseOver

function CancelMouseOver(flags, hotspot_id)
    keepscrolling = false
end  -- function CancelMouseOver

function MouseDown(flags, hotspot_id)
    if (hotspot_id == "resizer") then
        startx, starty = WindowInfo (Win, 17), WindowInfo (Win, 18)
    elseif (hotspot_id == "scroller") then
        clickdelta = WindowHotspotInfo(Win, "scroller", 2)-WindowInfo (Win, 15)
        dragscrolling = true
    elseif (hotspot_id == "textarea" and flags == miniwin.hotspot_got_lh_mouse) then
        GetBufferedMessage(WindowInfo(Win, 14), WindowInfo(Win,15))
    else
        keepscrolling = true
        scrollbar(hotspot_id)
    end -- if
end  -- function MouseDown

function CancelMouseDown(flags, hotspot_id)
    keepscrolling = false
    refresh()
end  -- function CancelMouseDown

function MouseUp(flags, hotspot_id)
    if (hotspot_id == "textarea" and flags == miniwin.hotspot_got_rh_mouse) then
        -- build menu for current state
        right_click_menu()
    else
        refresh()
    end -- if
    keepscrolling = false
end  -- function MouseUp

function chat_echo (name, line, wildcards)
    if wildcards [1] == false then
      echo = not echo  -- toggle
    else
      echo = wildcards [1]:lower () == " on"
    end -- if

    if echo then
        ColourNote ("yellow", "", "Echoing chats in main window ENABLED.")
    else
        ColourNote ("yellow", "", "Echoing chats in main window DISABLED.")
    end -- if
end -- function chat_echo

function chat_show (name, line, wildcards)
   WindowShow( Win, true )
   ColourNote ("yellow", "", "Chats window now shown. Type 'chats hide' to hide it.")
end -- function chat_show

function chat_hide (name, line, wildcards)
   WindowShow( Win, false )
   ColourNote ("yellow", "", "Chats window now hidden. Type 'chats show' to see it again.")
end -- function chat_hide

-- right click menu
function right_click_menu ()
    menustring ="Copy All To Clipboard|Change Font|Turn Echo "
    
    if echo then
        menustring = menustring .. "Off"
    else
        menustring = menustring .. "On"
    end -- if
    
    menustring = menustring.."|>Timestamp|No Timestamps|30 Aug 13:29:49|30 Aug 01:20:12PM|13:29:08|1:22:06 PM"
    result = WindowMenu (Win, 
        WindowInfo (Win, 14),  -- x position
        WindowInfo (Win, 15),   -- y position
        menustring) -- content
    if result == "Copy All To Clipboard" then
        GetAllBufferedMessages()
        ColourNote ("yellow", "", "All buffered messages copied to clipboard.")
    elseif result == "Change Font" then
        wanted_font = utils.fontpicker (BODY_FONT_NAME, BODY_FONT_SIZE) --font dialog
        if wanted_font then
            BODY_FONT_NAME = wanted_font.name
            BODY_FONT_SIZE = wanted_font.size
            SetVariable ("bodyfont", BODY_FONT_NAME)
            SetVariable ("font_size", BODY_FONT_SIZE)
            OnPluginInstall()
        end
    elseif result == "Turn Echo Off" then
        echo = false
        ColourNote ("yellow", "", "Echoing chats in main window DISABLED.")
    elseif result == "Turn Echo On" then
        echo = true
        ColourNote ("yellow", "", "Echoing chats in main window ENABLED.")
    elseif result == "No Timestamps" then
        timestamp = false
        ColourNote ("yellow", "", "Timestamps in communication window DISABLED.")
    elseif result == "30 Aug 13:29:49" then
        timestamp = true
        date_format = "[%d %b %H:%M:%S] "
        ColourNote ("yellow", "", "Timestamps in communication window ENABLED using format like '30 Aug 13:29:49'.")
    elseif result == "30 Aug 01:20:12PM" then
        timestamp = true
        date_format = "[%d %b %I:%M:%S%p] "
        ColourNote ("yellow", "", "Timestamps in communication window ENABLED using format like '30 Aug 01:20:12PM'.")
    elseif result == "13:29:08" then
        timestamp = true
        date_format = "[%H:%M:%S] "
        ColourNote ("yellow", "", "Timestamps in communication window ENABLED using format like '13:29:08'.")
    elseif result == "1:22:06 PM" then
        timestamp = true
        date_format = "[%I:%M:%S%p] "
        ColourNote ("yellow", "", "Timestamps in communication window ENABLED using format like '1:22:06 PM'.")
    end -- if
end -- function right_click_menu
]]>
</script>
</muclient>