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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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28
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4 local range = Luan.range or error()
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15
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5 local stringify = Luan.stringify 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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17
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10 local to_number = String.to_number or error()
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28
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11 local find = String.find or error()
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33
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12 local regex = String.regex or error()
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13 local regex_quote = String.regex_quote or error()
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34
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14 local regex_quote_replacement = String.regex_quote_replacement or error()
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0
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15 local Io = require "luan:Io.luan"
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16 local print = Io.print or error()
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3
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17 local new_file = Io.schemes.file or error()
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7
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18 local Math = require "luan:Math.luan"
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19 local min = Math.min or error()
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0
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20 local Swing = require "luan:swing/Swing.luan"
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21 local new_frame = require("luan:swing/Frame.luan").new or error()
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22 local new_label = require("luan:swing/Label.luan").new or error()
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23 local new_text_area = require("luan:swing/Text_area.luan").new or error()
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24 local new_scroll_pane = require("luan:swing/Scroll_pane.luan").new or error()
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18
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25 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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26 local new_menu_bar = require("luan:swing/Menu_bar.luan").new or error()
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21
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27 local Menu = require "luan:swing/Menu.luan"
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28 local new_menu = Menu.new or error()
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29 local separator = Menu.separator or error()
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0
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30 local new_menu_item = require("luan:swing/Menu_item.luan").new or error()
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2
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31 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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32 local int_to_color = require("luan:swing/Color.luan").int_to_color or error()
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18
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33 local Border = require "luan:swing/Border.luan"
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34 local create_empty_border = Border.create_empty_border or error()
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35 local create_line_border = Border.create_line_border or error()
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26
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36 local no_border = Border.no_border or error()
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18
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37 local Layout = require "luan:swing/Layout.luan"
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25
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38 local new_mig_layout = Layout.new_mig_layout or error()
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16
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39 local Option_pane = require "luan:swing/Option_pane.luan"
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40 local show_message_dialog = Option_pane.show_message_dialog or error()
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17
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41 local show_input_dialog = Option_pane.show_input_dialog or error()
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18
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42 local new_dialog = require("luan:swing/Dialog.luan").new or error()
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43 local new_panel = require("luan:swing/Component.luan").new_panel or error()
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44 local new_button = require("luan:swing/Button.luan").new or error()
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31
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45 local new_check_box = require("luan:swing/Check_box.luan").new or error()
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25
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46 local new_text_field = require("luan:swing/Text_field.luan").new or error()
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0
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47 local Logging = require "luan:logging/Logging.luan"
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48 local logger = Logging.logger "editor"
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49
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50
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51 local new_window
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52
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20
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53 local function action_listener(fn)
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54 return function(_)
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55 fn()
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56 end
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57 end
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58
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29
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59 local function add_menu_bar(window)
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21
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60 local document = window.text_area.document
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61 local revert = new_menu_item{
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62 text = "Revert"
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63 enabled = window.has_file
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64 action_listener = action_listener(window.revert)
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65 }
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66 local undo = new_menu_item{
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67 text = "Undo"
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68 accelerator = "meta Z"
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69 action_listener = action_listener(document.undo)
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70 }
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71 local redo = new_menu_item{
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72 text = "Redo"
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73 accelerator = "meta shift Z"
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74 action_listener = action_listener(document.redo)
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75 }
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76 local function update_undo_redo()
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77 undo.set_enabled(document.can_undo())
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78 redo.set_enabled(document.can_redo())
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4
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79 end
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21
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80 window.update_undo_redo = update_undo_redo -- dont gc
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81 update_undo_redo()
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82 document.add_undo_listener(update_undo_redo)
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83
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33
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84 local find_menu_item = new_check_box_menu_item{
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85 text = "Find and Replace"
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86 accelerator = "meta F"
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87 action_listener = function(event)
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88 window.show_find_panel(event.source.state)
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89 end
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90 }
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91 window.find_menu_item = find_menu_item
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92
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29
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93 local menu_bar = new_menu_bar{
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21
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94 menus = {
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95 new_menu{
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96 text = "File"
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97 menu_items = {
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98 new_menu_item{
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99 text = "New File"
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100 accelerator = "meta N"
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101 action_listener = function(_)
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102 new_window()
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103 end
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104 }
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105 new_menu_item{
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106 text = "Open..."
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107 accelerator = "meta O"
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108 action_listener = action_listener(window.open)
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109 }
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110 new_menu_item{
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111 text = "Save"
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112 accelerator = "meta S"
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113 action_listener = function(_)
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114 if window.save() then
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115 revert.set_enabled(true)
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116 end
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117 end
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118 }
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119 revert
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120 }
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19
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121 }
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21
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122 new_menu{
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123 text = "Edit"
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124 menu_items = {
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125 undo
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126 redo
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127 separator
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128 new_menu_item{
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129 text = "Cut"
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130 accelerator = "meta X"
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131 action_listener = action_listener(window.text_area.cut)
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132 }
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133 new_menu_item{
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134 text = "Copy"
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135 accelerator = "meta C"
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136 action_listener = action_listener(window.text_area.copy)
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137 }
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138 new_menu_item{
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139 text = "Paste"
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140 accelerator = "meta V"
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141 action_listener = action_listener(window.text_area.paste)
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142 }
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143 separator
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144 new_menu_item{
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145 text = "Indent"
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146 accelerator = "meta CLOSE_BRACKET"
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147 action_listener = action_listener(window.indent)
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148 }
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149 new_menu_item{
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150 text = "Unindent"
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151 accelerator = "meta OPEN_BRACKET"
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152 action_listener = action_listener(window.unindent)
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153 }
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154 separator
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155 new_menu_item{
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156 text = "Select All"
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157 accelerator = "meta A"
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158 action_listener = action_listener(window.text_area.select_all)
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159 }
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32
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160 }
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161 }
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162 new_menu{
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163 text = "Find"
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164 menu_items = {
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33
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165 find_menu_item
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32
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166 new_menu_item{
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167 text = "Find Case Insensitive"
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33
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168 action_listener = window.find_case_insensitive
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32
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169 }
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170 new_menu_item{
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171 text = "Convert Leading Tabs to Spaces"
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172 }
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173 new_menu_item{
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174 text = "Convert Leading Spaces to Tabs"
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175 }
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21
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176 }
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20
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177 }
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21
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178 new_menu{
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179 text = "View"
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180 menu_items = {
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181 new_check_box_menu_item{
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182 text = "Word Wrap"
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183 state = window.text_area.line_wrap
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184 action_listener = function(event)
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185 window.text_area.line_wrap = event.source.state
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186 end
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187 }
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188 new_check_box_menu_item{
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189 text = "Show Whitespace"
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190 action_listener = function(event)
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191 window.text_area.show_whitespace(event.source.state)
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192 end
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193 }
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194 new_menu_item{
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195 text = "Show Cursor Column"
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196 action_listener = function(_)
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197 show_message_dialog( window.frame, "Cursor Column: "..window.cursor_column() )
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198 end
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199 }
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200 new_menu_item{
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201 text = "Goto Line"
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202 accelerator = "meta G"
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203 action_listener = function(_)
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204 local input = show_input_dialog( window.frame, "Goto line" )
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205 local line = input and to_number(input)
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206 if line ~= nil then
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207 window.goto(line)
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208 end
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209 end
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210 }
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211 }
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20
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212 }
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21
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213 }
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214 }
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29
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215 window.frame.set_menu_bar(menu_bar)
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0
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216 end
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217
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28
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218 local function get_matches(text,s)
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33
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219 local r = regex(s)
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28
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220 local matches = {}
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221 local i = 0
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222 while(true) do
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33
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223 local j1, j2 = r.find(text,i)
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224 if j1 == nil then
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28
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225 break
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226 end
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33
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227 matches[#matches+1] = { start=j1, end_=j2 }
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228 i = j2
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28
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229 end
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230 return matches
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231 end
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232
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29
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233 local function make_find_panel(window)
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28
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234 local text_area = window.text_area
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34
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235 local find_field, replace_field, regex_check_box, output
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28
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236 local function find_match(event)
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237 --logger.info("action "..event.action)
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238 local s = find_field.text
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33
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239 if #s == 0 then
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28
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240 output.text = ""
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241 return
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242 end
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33
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243 if not regex_check_box.is_selected then
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244 s = regex_quote(s)
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245 end
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246 local matches
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247 try
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248 matches = get_matches( text_area.text, s )
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249 catch e
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250 output.text = "Regex error: "..e.get_message()
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251 return
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252 end
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28
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253 local n_matches = #matches
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254 if n_matches == 0 then
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255 output.text = "0 matches"
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256 return
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257 end
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258 local action = event.action
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259 if action == "next" then
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260 local _, pos = text_area.get_selection()
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261 for i, match in ipairs(matches) do
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262 if match.start >= pos then
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263 text_area.set_selection( match.start, match.end_ )
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264 output.text = i.." of "..n_matches.." matches"
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265 return
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266 end
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267 end
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268 local match = matches[1]
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269 text_area.set_selection( match.start, match.end_ )
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270 output.text = "1 of "..n_matches.." matches; wrapped past end"
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271 elseif action == "previous" then
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272 local pos = text_area.get_selection()
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273 for i in range(n_matches,1,-1) do
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274 local match = matches[i]
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275 if match.end_ <= pos then
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276 text_area.set_selection( match.start, match.end_ )
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277 output.text = i.." of "..n_matches.." matches"
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278 return
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279 end
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280 end
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281 local match = matches[n_matches]
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282 text_area.set_selection( match.start, match.end_ )
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283 output.text = n_matches.." of "..n_matches.." matches; wrapped past end"
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284 else
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285 error(action)
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286 end
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287 end
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34
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288 local function replace_match(_)
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289 local find = find_field.text
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290 if #find == 0 then
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291 output.text = ""
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292 return
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293 end
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294 local replace = replace_field.text
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295 if not regex_check_box.is_selected then
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296 find = regex_quote(find)
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297 replace = regex_quote_replacement(replace)
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298 end
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299 local r
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300 try
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301 r = regex(find)
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302 catch e
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303 output.text = "Regex error: "..e.get_message()
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304 return
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305 end
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306 local selection = text_area.selected_text
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307 local new, n = r.gsub(selection,replace)
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308 if n > 0 then
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309 text_area.selected_text = new
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310 end
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311 output.text = n.." replacements"
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312 end
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28
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313 find_field = new_text_field{
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29
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314 constraints = "growx"
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30
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315 show_whitespace = true
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28
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316 action = "next"
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317 action_listener = find_match
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318 }
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34
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319 replace_field = new_text_field{
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320 constraints = "growx"
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321 show_whitespace = true
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322 action_listener = replace_match
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323 }
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33
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324 regex_check_box = new_check_box{
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325 text = "Use Regex"
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326 }
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28
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327 output = new_label{
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29
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328 constraints = "span"
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28
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329 }
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29
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330 local find_panel = new_panel{
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331 constraints = "growy 0,growx"
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332 layout = new_mig_layout("","[][grow][grow 0]")
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333 visible = false
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334 children = {
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335 new_label{
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336 constraints = "right"
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337 text = "Find:"
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338 }
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339 find_field
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30
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340 new_button{
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341 constraints = "grow"
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342 text = "Find Next"
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343 action = "next"
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344 action_listener = find_match
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345 }
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346 new_button{
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347 constraints = "grow,wrap"
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348 text = "Find Previous"
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349 action = "previous"
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350 action_listener = find_match
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29
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351 }
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352 new_label{
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353 constraints = "right"
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354 text = "Replace:"
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25
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355 }
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34
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356 replace_field
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29
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357 new_button{
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30
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358 constraints = "grow"
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29
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359 text = "Replace"
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34
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360 tool_tip_text = "Replace matches in selected text"
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361 action_listener = replace_match
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29
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362 }
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30
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363 new_button{
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364 constraints = "grow,wrap"
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365 text = "Replace All"
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366 }
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31
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367 new_panel{
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368 constraints = "span,wrap"
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369 layout = new_mig_layout("insets 0,gap 16px")
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370 children = {
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33
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371 regex_check_box
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31
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372 new_button{
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32
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373 text = "Learn About Regular Expressions"
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31
|
374 }
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|
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375 }
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|
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376 }
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29
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377 output
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25
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378 }
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22
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379 }
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29
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380 function window.show_find_panel(visible)
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381 find_panel.visible = visible
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382 if visible then
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383 find_field.request_focus_in_window()
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18
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384 end
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|
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385 end
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33
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386 function window.find_case_insensitive(_)
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387 find_panel.visible = true
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|
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388 window.find_menu_item.is_selected = true
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389 regex_check_box.is_selected = true
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390 find_field.text = "(?i)\Q\E"
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|
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391 find_field.set_selection(7)
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392 find_field.request_focus_in_window()
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34
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393 output.text = ""
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33
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394 end
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29
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395 return find_panel
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18
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396 end
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397
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0
|
398 local n_windows = 0
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|
5
|
399 local documents = {}
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0
|
400
|
|
1
|
401 function new_window(file)
|
|
5
|
402 local window = {}
|
|
7
|
403 window.has_file = file~=nil and file.is_file()
|
|
24
|
404 local text_area = new_text_area{
|
|
|
405 wrap_style_word = true
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|
|
406 line_wrap = true
|
|
|
407 tab_size = 4
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408 font = { family="Monospaced", size=13 }
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409 }
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410 window.text_area = text_area
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5
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411 local title = file and file.canonical().to_string() or "new"
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412 if file ~= nil then
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413 local document = documents[title]
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414 if document == nil then
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415 documents[title] = text_area.document
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416 else
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417 text_area.document = document
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418 end
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419 if file.is_file() then
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420 text_area.text = file.read_text()
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20
|
421 text_area.document.clear_unedited()
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5
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422 end
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1
|
423 end
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24
|
424 text_area.set_selection(0)
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29
|
425 local find_panel = make_find_panel(window)
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24
|
426 local frame = new_frame{
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29
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427 preferred_size = { width=700, height=700 }
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428 content_pane = new_panel{
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429 layout = new_mig_layout("insets 0,wrap,fill,hidemode 3","","[][grow 0]")
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430 children = {
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431 new_scroll_pane{
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432 constraints = "grow"
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433 view = text_area
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434 row_header_view = new_text_area_line_numbers{
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435 text_area = text_area
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|
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436 foreground_color = int_to_color(0x888888)
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437 border = create_empty_border(0,8,0,8)
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|
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438 }
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|
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439 }
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|
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440 find_panel
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24
|
441 }
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|
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442 }
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|
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443 }
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|
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444 window.frame = frame
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|
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445 frame.add_close_listener(function()
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|
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446 n_windows = n_windows - 1
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|
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447 if n_windows == 0 then
|
|
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448 Luan.exit()
|
|
|
449 end
|
|
|
450 end)
|
|
10
|
451 local function set_title()
|
|
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452 local s = title
|
|
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453 if not text_area.document.is_unedited() then
|
|
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454 s = s.." *"
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|
|
455 end
|
|
|
456 frame.title = s
|
|
|
457 end
|
|
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458 set_title()
|
|
24
|
459 window.set_title = set_title -- dont gc
|
|
10
|
460 text_area.document.add_undo_listener(set_title)
|
|
5
|
461 function window.open()
|
|
|
462 local file_chooser = frame.file_chooser_load()
|
|
|
463 if file ~= nil then
|
|
|
464 file_chooser.directory = file.parent()
|
|
|
465 end
|
|
|
466 file_chooser.visible = true
|
|
|
467 local new_file = file_chooser.file
|
|
|
468 if new_file ~= nil then
|
|
|
469 new_window(new_file)
|
|
|
470 end
|
|
|
471 end
|
|
|
472 function window.save()
|
|
|
473 if file == nil then
|
|
|
474 local file_chooser = frame.file_chooser_save()
|
|
|
475 file_chooser.visible = true
|
|
|
476 file = file_chooser.file
|
|
|
477 if file == nil then
|
|
7
|
478 return false
|
|
5
|
479 end
|
|
|
480 title = file.canonical().to_string()
|
|
|
481 frame.title = title
|
|
|
482 documents[title] = text_area.document
|
|
|
483 end
|
|
|
484 file.write_text(text_area.text)
|
|
10
|
485 text_area.document.set_unedited()
|
|
7
|
486 return true
|
|
|
487 end
|
|
|
488 function window.revert()
|
|
15
|
489 local selection = text_area.get_selection()
|
|
7
|
490 local text = file.read_text()
|
|
|
491 text_area.text = text
|
|
15
|
492 text_area.set_selection(min(selection,#text+1))
|
|
10
|
493 text_area.document.set_unedited()
|
|
5
|
494 end
|
|
15
|
495 local function selection_lines()
|
|
|
496 local start_seletion, end_selection = text_area.get_selection()
|
|
|
497 local end_ = end_selection == start_seletion and end_selection or end_selection - 1
|
|
|
498 local start_line = text_area.get_line_from_position(start_seletion)
|
|
|
499 local end_line = text_area.get_line_from_position(end_)
|
|
|
500 local start_pos = text_area.get_line_start_position(start_line)
|
|
|
501 local end_pos = text_area.get_line_end_position(end_line)
|
|
|
502 local text = text_area.text
|
|
|
503 text = sub_string(text,start_pos,end_pos-2)
|
|
|
504 return {
|
|
|
505 text = text
|
|
|
506 start_pos = start_pos
|
|
|
507 length = #text
|
|
|
508 lines = end_line - start_line + 1
|
|
|
509 start_seletion = start_seletion
|
|
|
510 end_selection = end_selection
|
|
|
511 }
|
|
|
512 end
|
|
|
513 function window.indent()
|
|
|
514 local r = selection_lines()
|
|
|
515 local text = r.text
|
|
|
516 local start_pos = r.start_pos
|
|
|
517 text = "\t"..replace(text,"\n","\n\t")
|
|
|
518 text_area.replace(start_pos,r.length,text)
|
|
|
519 --logger.info(stringify{text_area.get_selection()})
|
|
|
520 text_area.set_selection( r.start_seletion+1, r.end_selection+r.lines )
|
|
|
521 end
|
|
|
522 function window.unindent()
|
|
|
523 local r = selection_lines()
|
|
|
524 local text = r.text
|
|
|
525 text = "\n"..text
|
|
|
526 local start_seletion = r.start_seletion
|
|
|
527 if starts_with(text,"\n\t") then
|
|
|
528 start_seletion = start_seletion - 1
|
|
|
529 end
|
|
|
530 local len1 = #text
|
|
|
531 text = replace(text,"\n\t","\n")
|
|
|
532 local len2 = #text
|
|
|
533 local end_selection = r.end_selection - (len1 - len2)
|
|
|
534 text = sub_string(text,2)
|
|
|
535 text_area.replace(r.start_pos,r.length,text)
|
|
|
536 text_area.set_selection(start_seletion,end_selection)
|
|
|
537 end
|
|
16
|
538 function window.cursor_column()
|
|
|
539 local cursor_pos = text_area.get_selection()
|
|
|
540 local line = text_area.get_line_from_position(cursor_pos)
|
|
|
541 local start_line_pos = text_area.get_line_start_position(line)
|
|
|
542 return cursor_pos - start_line_pos + 1
|
|
|
543 end
|
|
17
|
544 function window.goto(line)
|
|
|
545 local pos = text_area.get_line_start_position(line)
|
|
|
546 text_area.set_selection(pos)
|
|
|
547 end
|
|
29
|
548 add_menu_bar(window)
|
|
0
|
549 frame.pack()
|
|
|
550 frame.visible = true
|
|
|
551 text_area.request_focus_in_window()
|
|
|
552 n_windows = n_windows + 1
|
|
|
553 end
|
|
|
554
|
|
1
|
555 Swing.run(function()
|
|
3
|
556 local args = Luan.arg
|
|
|
557 if #args == 0 then
|
|
|
558 new_window()
|
|
|
559 else
|
|
|
560 for _, arg in ipairs(args) do
|
|
|
561 local file = new_file(arg)
|
|
|
562 new_window(file)
|
|
|
563 end
|
|
|
564 end
|
|
1
|
565 end)
|
