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0
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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
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3 local ipairs = Luan.ipairs or error()
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15
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4 local stringify = Luan.stringify or error()
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5 local String = require "luan:String.luan"
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6 local sub_string = String.sub or error()
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7 local replace = String.replace or error()
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8 local starts_with = String.starts_with or error()
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17
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9 local to_number = String.to_number or error()
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0
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10 local Io = require "luan:Io.luan"
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11 local print = Io.print or error()
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3
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12 local new_file = Io.schemes.file or error()
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7
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13 local Math = require "luan:Math.luan"
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14 local min = Math.min or error()
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0
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15 local Swing = require "luan:swing/Swing.luan"
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16 local new_frame = require("luan:swing/Frame.luan").new or error()
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17 local new_label = require("luan:swing/Label.luan").new or error()
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18 local new_text_area = require("luan:swing/Text_area.luan").new or error()
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19 local new_scroll_pane = require("luan:swing/Scroll_pane.luan").new or error()
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18
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20 local new_text_area_line_numbers = require("luan:swing/Text_area_line_numbers.luan").new or error()
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0
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21 local new_menu_bar = require("luan:swing/Menu_bar.luan").new or error()
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21
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22 local Menu = require "luan:swing/Menu.luan"
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23 local new_menu = Menu.new or error()
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24 local separator = Menu.separator or error()
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0
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25 local new_menu_item = require("luan:swing/Menu_item.luan").new or error()
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2
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26 local new_check_box_menu_item = require("luan:swing/Check_box_menu_item.luan").new or error()
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12
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27 local int_to_color = require("luan:swing/Color.luan").int_to_color or error()
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18
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28 local Border = require "luan:swing/Border.luan"
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29 local create_empty_border = Border.create_empty_border or error()
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30 local create_line_border = Border.create_line_border or error()
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31 local Layout = require "luan:swing/Layout.luan"
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32 local new_flow_layout = Layout.new_flow_layout or error()
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33 local new_box_layout = Layout.new_box_layout or error()
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16
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34 local Option_pane = require "luan:swing/Option_pane.luan"
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35 local show_message_dialog = Option_pane.show_message_dialog or error()
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17
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36 local show_input_dialog = Option_pane.show_input_dialog or error()
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18
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37 local new_dialog = require("luan:swing/Dialog.luan").new or error()
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38 local new_panel = require("luan:swing/Component.luan").new_panel or error()
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39 local new_button = require("luan:swing/Button.luan").new or error()
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0
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40 local Logging = require "luan:logging/Logging.luan"
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41 local logger = Logging.logger "editor"
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42
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43
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44 local new_window
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45
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20
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46 local function action_listener(fn)
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47 return function(_)
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48 fn()
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49 end
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50 end
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51
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1
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52 local function make_menu_bar(window)
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21
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53 local document = window.text_area.document
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54 local revert = new_menu_item{
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55 text = "Revert"
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56 enabled = window.has_file
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57 action_listener = action_listener(window.revert)
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58 }
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59 local undo = new_menu_item{
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60 text = "Undo"
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61 accelerator = "meta Z"
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62 action_listener = action_listener(document.undo)
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63 }
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64 local redo = new_menu_item{
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65 text = "Redo"
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66 accelerator = "meta shift Z"
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67 action_listener = action_listener(document.redo)
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68 }
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69 local function update_undo_redo()
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70 undo.set_enabled(document.can_undo())
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71 redo.set_enabled(document.can_redo())
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4
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72 end
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21
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73 window.update_undo_redo = update_undo_redo -- dont gc
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74 update_undo_redo()
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75 document.add_undo_listener(update_undo_redo)
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76
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77 return new_menu_bar{
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78 menus = {
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79 new_menu{
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80 text = "File"
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81 menu_items = {
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82 new_menu_item{
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83 text = "New File"
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84 accelerator = "meta N"
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85 action_listener = function(_)
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86 new_window()
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87 end
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88 }
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89 new_menu_item{
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90 text = "Open..."
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91 accelerator = "meta O"
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92 action_listener = action_listener(window.open)
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93 }
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94 new_menu_item{
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95 text = "Save"
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96 accelerator = "meta S"
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97 action_listener = function(_)
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98 if window.save() then
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99 revert.set_enabled(true)
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100 end
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101 end
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102 }
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103 revert
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104 }
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19
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105 }
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21
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106 new_menu{
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107 text = "Edit"
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108 menu_items = {
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109 undo
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110 redo
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111 separator
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112 new_menu_item{
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113 text = "Cut"
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114 accelerator = "meta X"
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115 action_listener = action_listener(window.text_area.cut)
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116 }
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117 new_menu_item{
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118 text = "Copy"
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119 accelerator = "meta C"
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120 action_listener = action_listener(window.text_area.copy)
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121 }
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122 new_menu_item{
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123 text = "Paste"
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124 accelerator = "meta V"
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125 action_listener = action_listener(window.text_area.paste)
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126 }
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127 separator
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128 new_menu_item{
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129 text = "Indent"
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130 accelerator = "meta CLOSE_BRACKET"
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131 action_listener = action_listener(window.indent)
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132 }
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133 new_menu_item{
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134 text = "Unindent"
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135 accelerator = "meta OPEN_BRACKET"
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136 action_listener = action_listener(window.unindent)
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137 }
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138 separator
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139 new_menu_item{
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140 text = "Select All"
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141 accelerator = "meta A"
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142 action_listener = action_listener(window.text_area.select_all)
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143 }
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144 separator
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145 new_menu_item{
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146 text = "Find and Replace"
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147 accelerator = "meta F"
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148 action_listener = action_listener(window.show_find_dialog)
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149 }
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150 }
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20
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151 }
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21
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152 new_menu{
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153 text = "View"
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154 menu_items = {
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155 new_check_box_menu_item{
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156 text = "Word Wrap"
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157 state = window.text_area.line_wrap
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158 action_listener = function(event)
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159 window.text_area.line_wrap = event.source.state
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160 end
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161 }
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162 new_check_box_menu_item{
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163 text = "Show Whitespace"
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164 action_listener = function(event)
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165 window.text_area.show_whitespace(event.source.state)
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166 end
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167 }
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168 new_menu_item{
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169 text = "Show Cursor Column"
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170 action_listener = function(_)
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171 show_message_dialog( window.frame, "Cursor Column: "..window.cursor_column() )
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172 end
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173 }
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174 new_menu_item{
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175 text = "Goto Line"
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176 accelerator = "meta G"
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177 action_listener = function(_)
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178 local input = show_input_dialog( window.frame, "Goto line" )
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179 --logger.info("input "..input)
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180 local line = input and to_number(input)
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181 if line ~= nil then
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182 window.goto(line)
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183 end
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184 end
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185 }
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186 }
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20
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187 }
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21
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188 }
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189 }
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0
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190 end
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191
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18
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192 local function make_find_dialog(window)
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193 local dialog = new_dialog(window.frame)
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194 local root = dialog.component
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195 root.set_layout(new_box_layout(root,"y_axis"))
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196 do
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197 local buttons = new_panel()
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198 buttons.set_layout(new_flow_layout("left"))
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199 --buttons.border = create_empty_border(8,8,8,8)
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200 buttons.border = create_line_border(int_to_color(0))
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201
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202 local find_next = new_button()
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203 find_next.text = "Find Next"
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204 buttons.add(find_next)
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205
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206 local find_prev = new_button()
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207 find_prev.text = "Find Previous"
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208 buttons.add(find_prev)
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209
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210 root.add(buttons)
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211 end
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212 dialog.pack()
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213 local was_shown = false
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214 function window.show_find_dialog()
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215 if not was_shown then
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216 was_shown = true
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217 dialog.move_into_owner()
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218 end
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219 dialog.visible = true
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220 end
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221 end
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222
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0
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223 local n_windows = 0
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5
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224 local documents = {}
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0
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225
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1
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226 function new_window(file)
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5
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227 local window = {}
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7
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228 window.has_file = file~=nil and file.is_file()
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0
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229 local frame = new_frame()
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16
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230 window.frame = frame
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5
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231 local title = file and file.canonical().to_string() or "new"
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0
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232 frame.add_close_listener(function()
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233 n_windows = n_windows - 1
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234 if n_windows == 0 then
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235 Luan.exit()
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236 end
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237 end)
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238 local text_area = new_text_area()
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5
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239 window.text_area = text_area
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240 if file ~= nil then
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241 local document = documents[title]
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242 if document == nil then
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243 documents[title] = text_area.document
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244 else
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245 text_area.document = document
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246 end
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247 if file.is_file() then
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248 text_area.text = file.read_text()
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20
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249 text_area.document.clear_unedited()
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5
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250 end
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1
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251 end
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10
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252 local function set_title()
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253 local s = title
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254 if not text_area.document.is_unedited() then
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255 s = s.." *"
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256 end
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257 frame.title = s
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258 end
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259 set_title()
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11
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260 text_area.dont_gc(set_title)
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10
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261 text_area.document.add_undo_listener(set_title)
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0
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262 text_area.rows = 10
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263 text_area.columns = 20
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264 text_area.wrap_style_word = true
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265 text_area.line_wrap = true
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266 text_area.tab_size = 4
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267 text_area.set_font{ family="Monospaced", size=13 }
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15
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268 text_area.set_selection(0)
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0
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269 --print(text_area.line_count)
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270 local scroll_pane = new_scroll_pane(text_area)
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13
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271 local line_numbers = new_text_area_line_numbers(text_area)
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272 line_numbers.foreground_color = int_to_color(0x888888)
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273 line_numbers.border = create_empty_border(0,8,0,8)
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274 scroll_pane.set_row_header_view(line_numbers)
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0
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275 frame.add(scroll_pane)
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5
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276 function window.open()
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277 local file_chooser = frame.file_chooser_load()
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278 if file ~= nil then
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279 file_chooser.directory = file.parent()
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280 end
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281 file_chooser.visible = true
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282 local new_file = file_chooser.file
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283 if new_file ~= nil then
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284 new_window(new_file)
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285 end
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286 end
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287 function window.save()
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288 if file == nil then
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289 local file_chooser = frame.file_chooser_save()
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290 file_chooser.visible = true
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291 file = file_chooser.file
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292 if file == nil then
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7
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293 return false
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5
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294 end
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295 title = file.canonical().to_string()
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296 frame.title = title
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297 documents[title] = text_area.document
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298 end
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299 file.write_text(text_area.text)
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10
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300 text_area.document.set_unedited()
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7
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301 return true
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302 end
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303 function window.revert()
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15
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304 local selection = text_area.get_selection()
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7
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305 local text = file.read_text()
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306 text_area.text = text
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15
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307 text_area.set_selection(min(selection,#text+1))
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10
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308 text_area.document.set_unedited()
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5
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309 end
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15
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310 local function selection_lines()
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311 local start_seletion, end_selection = text_area.get_selection()
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312 local end_ = end_selection == start_seletion and end_selection or end_selection - 1
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313 local start_line = text_area.get_line_from_position(start_seletion)
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314 local end_line = text_area.get_line_from_position(end_)
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315 local start_pos = text_area.get_line_start_position(start_line)
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316 local end_pos = text_area.get_line_end_position(end_line)
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317 local text = text_area.text
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318 text = sub_string(text,start_pos,end_pos-2)
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319 return {
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320 text = text
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321 start_pos = start_pos
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322 length = #text
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323 lines = end_line - start_line + 1
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324 start_seletion = start_seletion
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325 end_selection = end_selection
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326 }
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327 end
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328 function window.indent()
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329 local r = selection_lines()
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330 local text = r.text
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331 local start_pos = r.start_pos
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332 text = "\t"..replace(text,"\n","\n\t")
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333 text_area.replace(start_pos,r.length,text)
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334 --logger.info(stringify{text_area.get_selection()})
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335 text_area.set_selection( r.start_seletion+1, r.end_selection+r.lines )
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336 end
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|
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337 function window.unindent()
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338 local r = selection_lines()
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339 local text = r.text
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340 text = "\n"..text
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341 local start_seletion = r.start_seletion
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342 if starts_with(text,"\n\t") then
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343 start_seletion = start_seletion - 1
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344 end
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345 local len1 = #text
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346 text = replace(text,"\n\t","\n")
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347 local len2 = #text
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348 local end_selection = r.end_selection - (len1 - len2)
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349 text = sub_string(text,2)
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350 text_area.replace(r.start_pos,r.length,text)
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351 text_area.set_selection(start_seletion,end_selection)
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352 end
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16
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353 function window.cursor_column()
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354 local cursor_pos = text_area.get_selection()
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355 local line = text_area.get_line_from_position(cursor_pos)
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356 local start_line_pos = text_area.get_line_start_position(line)
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357 return cursor_pos - start_line_pos + 1
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358 end
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17
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359 function window.goto(line)
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360 local pos = text_area.get_line_start_position(line)
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361 text_area.set_selection(pos)
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362 end
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18
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363 make_find_dialog(window)
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1
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364 local menu_bar = make_menu_bar(window)
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0
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365 frame.set_menu_bar(menu_bar)
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366 frame.pack()
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367 frame.visible = true
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368 text_area.request_focus_in_window()
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369 n_windows = n_windows + 1
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370 end
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371
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1
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372 Swing.run(function()
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3
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373 local args = Luan.arg
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|
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374 if #args == 0 then
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375 new_window()
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376 else
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377 for _, arg in ipairs(args) do
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378 local file = new_file(arg)
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379 new_window(file)
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380 end
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|
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381 end
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1
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382 end)
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