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37
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1 local Luan = require "luan:Luan.luan"
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2 local error = Luan.error
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3 local stringify = Luan.stringify or error()
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4 local Math = require "luan:Math.luan"
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5 local min = Math.min or error()
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6 local String = require "luan:String.luan"
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7 local sub_string = String.sub or error()
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8 local replace = String.replace or error()
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9 local starts_with = String.starts_with or error()
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10 local Io = require "luan:Io.luan"
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11 local new_text_area = require("luan:swing/Text_area.luan").new or error()
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12 local new_frame = require("luan:swing/Frame.luan").new or error()
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13 local new_panel = require("luan:swing/Component.luan").new_panel or error()
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14 local Layout = require "luan:swing/Layout.luan"
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15 local new_mig_layout = Layout.new_mig_layout or error()
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16 local new_scroll_pane = require("luan:swing/Scroll_pane.luan").new or error()
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17 local new_text_area_line_numbers = require("luan:swing/Text_area_line_numbers.luan").new or error()
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18 local int_to_color = require("luan:swing/Color.luan").int_to_color or error()
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19 local Border = require "luan:swing/Border.luan"
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20 local create_empty_border = Border.create_empty_border or error()
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21 local new_label = require("luan:swing/Label.luan").new or error()
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22 local make_find_panel = require "classpath:luan_editor/find.luan"
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23 local add_menu_bar = require "classpath:luan_editor/menu.luan"
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24 local Swing = require "luan:swing/Swing.luan"
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25 local File_chooser = require "luan:swing/File_chooser.luan"
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26 local choose_file = File_chooser.awt_choose_file or error()
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39
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27 local Option_pane = require "luan:swing/Option_pane.luan"
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28 local show_message_dialog = Option_pane.show_message_dialog or error()
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37
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29 local Logging = require "luan:logging/Logging.luan"
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30 local logger = Logging.logger "editor/window"
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31
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32
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33 local n_windows = 0
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34 local documents = {}
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35
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36 local function bool(val,default)
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37 if val ~= nil then
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38 return val
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39 else
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40 return default
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41 end
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42 end
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43
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44 local config_file = Io.uri("file:"..Swing.home_dir.."/.luan_editor")
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45 local config = {}
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46 if config_file.exists() then
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47 try
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48 config = Luan.parse(config_file.read_text())
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49 catch e
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50 logger.error(e)
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51 end
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52 end
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53 config.size = config.size or { width=700, height=700 }
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54 config.line_wrap = bool( config.line_wrap, true )
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55 config.whitespace_visible = bool( config.whitespace_visible, false )
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56 config.tab_size = config.tab_size or 4
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57
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58 local function save_config()
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59 config_file.write_text( stringify(config).."\n" )
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60 end
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61
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38
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62 local function new_window(file,document)
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37
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63 local window = {}
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39
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64 if file == nil or not file.exists() then
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65 window.has_file = false
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66 elseif file.is_file() then
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67 window.has_file = true
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68 else
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69 show_message_dialog(nil,"Not a file")
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70 if n_windows == 0 then
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71 Luan.exit()
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72 else
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73 return
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74 end
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75 end
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76 window.has_file = file~=nil and file.exists()
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37
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77 local text_area = new_text_area{
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78 wrap_style_word = true
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79 line_wrap = config.line_wrap
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80 whitespace_visible = config.whitespace_visible
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81 tab_size = config.tab_size
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82 font = { family="Monospaced", size=13 }
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83 }
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84 window.text_area = text_area
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85 local title = file and file.canonical().to_string() or "new"
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38
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86 if document ~= nil then
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87 text_area.document = document
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88 elseif file ~= nil then
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37
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89 local document = documents[title]
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39
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90 if document ~= nil then
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37
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91 text_area.document = document
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39
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92 else
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93 documents[title] = text_area.document
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94 if file.exists() then
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95 text_area.text = file.read_text()
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96 text_area.document.clear_unedited()
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97 end
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37
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98 end
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99 end
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100 text_area.set_selection(0)
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101 local status_bar = new_label{
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102 constraints = "span,growx"
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103 text = " "
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104 border = create_empty_border(2,16,4,16)
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105 }
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106 window.status_bar = status_bar
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107 local find_panel = make_find_panel(window)
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108 local frame = new_frame{
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109 preferred_size = config.size
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110 content_pane = new_panel{
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111 layout = new_mig_layout("insets 0,wrap,fill,hidemode 3","","[][grow 0]")
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112 children = {
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113 new_scroll_pane{
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114 constraints = "grow"
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115 view = text_area
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116 row_header_view = new_text_area_line_numbers{
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117 text_area = text_area
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118 foreground_color = int_to_color(0x888888)
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119 border = create_empty_border(0,8,0,8)
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120 }
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121 }
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122 find_panel
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123 status_bar
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124 }
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125 }
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126 }
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127 window.frame = frame
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128 frame.add_close_listener(function()
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129 n_windows = n_windows - 1
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130 if n_windows == 0 then
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131 Luan.exit()
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132 end
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133 end)
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134 frame.add_resize_stopped_listener( 200, function()
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135 --logger.info(stringify(frame.size))
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136 config.size = frame.size
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137 save_config()
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138 end)
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139 frame.add_move_stopped_listener( 200, function()
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140 --logger.info(stringify(frame.location))
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141 config.location = frame.location
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142 save_config()
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143 end)
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144 local function set_title()
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145 local s = title
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146 if not text_area.document.is_unedited() then
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147 s = s.." *"
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148 end
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149 frame.title = s
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150 end
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151 set_title()
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152 window.set_title = set_title -- dont gc
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153 text_area.document.add_undo_listener(set_title)
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154 window.new = new_window
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155 function window.open()
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156 local new_file = choose_file{
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157 action = "load"
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158 parent = frame
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159 directory = file and file.parent()
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160 }
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161 if new_file ~= nil then
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162 new_window(new_file)
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163 end
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164 end
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165 function window.save()
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166 if file == nil then
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167 file = choose_file{
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168 action = "save"
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169 parent = frame
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170 }
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171 if file == nil then
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172 return false
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173 end
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174 title = file.canonical().to_string()
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175 frame.title = title
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176 documents[title] = text_area.document
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177 end
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39
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178 try
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179 file.write_text(text_area.text)
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180 catch e
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181 show_message_dialog( frame, e.get_message() )
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182 return false
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183 end
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37
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184 text_area.document.set_unedited()
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185 return true
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186 end
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187 function window.revert()
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188 local selection = text_area.get_selection()
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189 local text = file.read_text()
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190 text_area.text = text
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191 text_area.set_selection(min(selection,#text+1))
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192 text_area.document.set_unedited()
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193 status_bar.text = "Reverted"
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194 end
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195 local function selection_lines()
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196 local start_seletion, end_selection = text_area.get_selection()
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197 local end_ = end_selection == start_seletion and end_selection or end_selection - 1
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198 local start_line = text_area.get_line_from_position(start_seletion)
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199 local end_line = text_area.get_line_from_position(end_)
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200 local start_pos = text_area.get_line_start_position(start_line)
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201 local end_pos = text_area.get_line_end_position(end_line)
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202 local text = text_area.text
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203 text = sub_string(text,start_pos,end_pos-2)
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204 return {
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205 text = text
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206 start_pos = start_pos
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207 length = #text
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208 lines = end_line - start_line + 1
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209 start_seletion = start_seletion
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210 end_selection = end_selection
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211 }
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212 end
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213 function window.indent()
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214 local r = selection_lines()
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215 local text = r.text
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216 local start_pos = r.start_pos
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217 text = "\t"..replace(text,"\n","\n\t")
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218 text_area.replace(start_pos,r.length,text)
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219 --logger.info(stringify{text_area.get_selection()})
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220 text_area.set_selection( r.start_seletion+1, r.end_selection+r.lines )
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221 end
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222 function window.unindent()
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223 local r = selection_lines()
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224 local text = r.text
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225 text = "\n"..text
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226 local start_seletion = r.start_seletion
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227 if starts_with(text,"\n\t") then
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228 start_seletion = start_seletion - 1
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229 end
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230 local len1 = #text
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231 text = replace(text,"\n\t","\n")
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232 local len2 = #text
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233 local end_selection = r.end_selection - (len1 - len2)
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234 text = sub_string(text,2)
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235 text_area.replace(r.start_pos,r.length,text)
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236 text_area.set_selection(start_seletion,end_selection)
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237 end
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238 function window.cursor_column()
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239 local cursor_pos = text_area.get_selection()
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240 local line = text_area.get_line_from_position(cursor_pos)
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241 local start_line_pos = text_area.get_line_start_position(line)
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242 return cursor_pos - start_line_pos + 1
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243 end
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244 function window.goto(line)
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245 local pos = text_area.get_line_start_position(line)
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246 text_area.set_selection(pos)
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247 end
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248 function window.set_line_wrap(line_wrap)
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249 text_area.line_wrap = line_wrap
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250 config.line_wrap = line_wrap
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251 save_config()
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252 end
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253 function window.set_whitespace_visible(whitespace_visible)
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254 text_area.whitespace_visible = whitespace_visible
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255 config.whitespace_visible = whitespace_visible
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256 save_config()
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257 end
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258 function window.set_tab_size(tab_size)
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259 text_area.tab_size = tab_size
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260 config.tab_size = tab_size
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261 save_config()
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262 end
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38
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263 function window.duplicate()
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264 local new = new_window(file,text_area.document)
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265 new.text_area.set_selection( text_area.get_selection() )
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266 end
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37
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267 add_menu_bar(window)
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268 frame.pack()
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269 if config.location ~= nil then
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270 frame.location = config.location
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271 end
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272 frame.visible = true
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273 text_area.request_focus_in_window()
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274 n_windows = n_windows + 1
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38
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275 return window
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37
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276 end
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277
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278 return new_window
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