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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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36
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15 local repeated = String.repeated or error()
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0
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16 local Io = require "luan:Io.luan"
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17 local print = Io.print or error()
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3
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18 local new_file = Io.schemes.file or error()
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7
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19 local Math = require "luan:Math.luan"
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20 local min = Math.min or error()
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0
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21 local Swing = require "luan:swing/Swing.luan"
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22 local new_frame = require("luan:swing/Frame.luan").new or error()
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23 local new_label = require("luan:swing/Label.luan").new or error()
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24 local new_text_area = require("luan:swing/Text_area.luan").new or error()
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25 local new_scroll_pane = require("luan:swing/Scroll_pane.luan").new or error()
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18
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26 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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27 local new_menu_bar = require("luan:swing/Menu_bar.luan").new or error()
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21
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28 local Menu = require "luan:swing/Menu.luan"
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29 local new_menu = Menu.new or error()
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30 local separator = Menu.separator or error()
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0
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31 local new_menu_item = require("luan:swing/Menu_item.luan").new or error()
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2
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32 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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33 local int_to_color = require("luan:swing/Color.luan").int_to_color or error()
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18
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34 local Border = require "luan:swing/Border.luan"
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35 local create_empty_border = Border.create_empty_border or error()
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36 local create_line_border = Border.create_line_border or error()
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26
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37 local no_border = Border.no_border or error()
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18
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38 local Layout = require "luan:swing/Layout.luan"
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25
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39 local new_mig_layout = Layout.new_mig_layout or error()
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16
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40 local Option_pane = require "luan:swing/Option_pane.luan"
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41 local show_message_dialog = Option_pane.show_message_dialog or error()
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17
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42 local show_input_dialog = Option_pane.show_input_dialog or error()
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18
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43 local new_dialog = require("luan:swing/Dialog.luan").new or error()
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44 local new_panel = require("luan:swing/Component.luan").new_panel or error()
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45 local new_button = require("luan:swing/Button.luan").new or error()
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31
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46 local new_check_box = require("luan:swing/Check_box.luan").new or error()
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25
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47 local new_text_field = require("luan:swing/Text_field.luan").new or error()
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0
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48 local Logging = require "luan:logging/Logging.luan"
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49 local logger = Logging.logger "editor"
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50
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51
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52 local new_window
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53
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20
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54 local function action_listener(fn)
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55 return function(_)
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56 fn()
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57 end
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58 end
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59
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29
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60 local function add_menu_bar(window)
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21
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61 local document = window.text_area.document
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62 local revert = new_menu_item{
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63 text = "Revert"
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64 enabled = window.has_file
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65 action_listener = action_listener(window.revert)
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66 }
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67 local undo = new_menu_item{
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68 text = "Undo"
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69 accelerator = "meta Z"
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70 action_listener = action_listener(document.undo)
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71 }
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72 local redo = new_menu_item{
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73 text = "Redo"
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74 accelerator = "meta shift Z"
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75 action_listener = action_listener(document.redo)
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76 }
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77 local function update_undo_redo()
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78 undo.set_enabled(document.can_undo())
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79 redo.set_enabled(document.can_redo())
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4
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80 end
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21
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81 window.update_undo_redo = update_undo_redo -- dont gc
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82 update_undo_redo()
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83 document.add_undo_listener(update_undo_redo)
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84
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33
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85 local find_menu_item = new_check_box_menu_item{
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86 text = "Find and Replace"
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87 accelerator = "meta F"
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88 action_listener = function(event)
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89 window.show_find_panel(event.source.state)
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90 end
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91 }
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92 window.find_menu_item = find_menu_item
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93
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29
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94 local menu_bar = new_menu_bar{
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21
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95 menus = {
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96 new_menu{
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97 text = "File"
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98 menu_items = {
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99 new_menu_item{
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100 text = "New File"
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101 accelerator = "meta N"
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102 action_listener = function(_)
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103 new_window()
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104 end
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105 }
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106 new_menu_item{
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107 text = "Open..."
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108 accelerator = "meta O"
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109 action_listener = action_listener(window.open)
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110 }
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111 new_menu_item{
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112 text = "Save"
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113 accelerator = "meta S"
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114 action_listener = function(_)
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115 if window.save() then
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116 revert.set_enabled(true)
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117 end
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118 end
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119 }
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120 revert
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121 }
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19
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122 }
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21
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123 new_menu{
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124 text = "Edit"
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125 menu_items = {
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126 undo
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127 redo
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128 separator
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129 new_menu_item{
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130 text = "Cut"
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131 accelerator = "meta X"
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132 action_listener = action_listener(window.text_area.cut)
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133 }
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134 new_menu_item{
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135 text = "Copy"
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136 accelerator = "meta C"
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137 action_listener = action_listener(window.text_area.copy)
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138 }
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139 new_menu_item{
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140 text = "Paste"
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141 accelerator = "meta V"
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142 action_listener = action_listener(window.text_area.paste)
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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 = "Indent"
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147 accelerator = "meta CLOSE_BRACKET"
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148 action_listener = action_listener(window.indent)
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149 }
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150 new_menu_item{
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151 text = "Unindent"
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152 accelerator = "meta OPEN_BRACKET"
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153 action_listener = action_listener(window.unindent)
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154 }
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155 separator
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156 new_menu_item{
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157 text = "Select All"
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158 accelerator = "meta A"
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159 action_listener = action_listener(window.text_area.select_all)
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160 }
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32
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161 }
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162 }
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163 new_menu{
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164 text = "Find"
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165 menu_items = {
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33
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166 find_menu_item
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32
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167 new_menu_item{
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168 text = "Find Case Insensitive"
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33
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169 action_listener = window.find_case_insensitive
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32
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170 }
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171 new_menu_item{
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172 text = "Convert Leading Tabs to Spaces"
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36
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173 action_listener = window.tabs_to_spaces
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32
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174 }
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175 new_menu_item{
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176 text = "Convert Leading Spaces to Tabs"
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36
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177 action_listener = window.spaces_to_tabs
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32
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178 }
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21
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179 }
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20
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180 }
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21
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181 new_menu{
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182 text = "View"
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183 menu_items = {
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184 new_check_box_menu_item{
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185 text = "Word Wrap"
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186 state = window.text_area.line_wrap
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187 action_listener = function(event)
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188 window.text_area.line_wrap = event.source.state
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189 end
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190 }
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191 new_check_box_menu_item{
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192 text = "Show Whitespace"
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193 action_listener = function(event)
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194 window.text_area.show_whitespace(event.source.state)
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195 end
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196 }
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197 new_menu_item{
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198 text = "Show Cursor Column"
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199 action_listener = function(_)
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200 show_message_dialog( window.frame, "Cursor Column: "..window.cursor_column() )
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201 end
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202 }
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203 new_menu_item{
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204 text = "Goto Line"
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205 accelerator = "meta G"
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206 action_listener = function(_)
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207 local input = show_input_dialog( window.frame, "Goto line" )
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208 local line = input and to_number(input)
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209 if line ~= nil then
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210 window.goto(line)
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211 end
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212 end
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213 }
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214 }
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20
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215 }
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21
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216 }
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217 }
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29
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218 window.frame.set_menu_bar(menu_bar)
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0
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219 end
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220
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28
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221 local function get_matches(text,s)
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33
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222 local r = regex(s)
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28
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223 local matches = {}
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36
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224 local i = 1
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225 local n = #text
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226 while i <= n do
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33
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227 local j1, j2 = r.find(text,i)
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228 if j1 == nil then
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28
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229 break
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230 end
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35
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231 j2 = j2 + 1
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36
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232 if j1 == j2 then
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233 i = j2 + 1
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234 else
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235 matches[#matches+1] = { start=j1, end_=j2 }
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236 i = j2
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237 end
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28
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238 end
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239 return matches
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240 end
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241
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29
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242 local function make_find_panel(window)
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28
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243 local text_area = window.text_area
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34
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244 local find_field, replace_field, regex_check_box, output
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28
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245 local function find_match(event)
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246 --logger.info("action "..event.action)
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247 local s = find_field.text
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33
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248 if #s == 0 then
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28
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249 output.text = ""
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250 return
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251 end
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33
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252 if not regex_check_box.is_selected then
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253 s = regex_quote(s)
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254 end
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255 local matches
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256 try
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257 matches = get_matches( text_area.text, s )
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258 catch e
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259 output.text = "Regex error: "..e.get_message()
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260 return
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261 end
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28
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262 local n_matches = #matches
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263 if n_matches == 0 then
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264 output.text = "0 matches"
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265 return
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266 end
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267 local action = event.action
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268 if action == "next" then
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269 local _, pos = text_area.get_selection()
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270 for i, match in ipairs(matches) do
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271 if match.start >= pos then
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272 text_area.set_selection( match.start, match.end_ )
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273 output.text = i.." of "..n_matches.." matches"
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274 return
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275 end
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276 end
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277 local match = matches[1]
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278 text_area.set_selection( match.start, match.end_ )
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279 output.text = "1 of "..n_matches.." matches; wrapped past end"
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280 elseif action == "previous" then
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281 local pos = text_area.get_selection()
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282 for i in range(n_matches,1,-1) do
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283 local match = matches[i]
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284 if match.end_ <= pos then
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285 text_area.set_selection( match.start, match.end_ )
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286 output.text = i.." of "..n_matches.." matches"
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287 return
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288 end
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289 end
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290 local match = matches[n_matches]
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291 text_area.set_selection( match.start, match.end_ )
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292 output.text = n_matches.." of "..n_matches.." matches; wrapped past end"
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293 else
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294 error(action)
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295 end
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296 end
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36
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297 local function replace_match(event)
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34
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298 local find = find_field.text
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299 if #find == 0 then
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300 output.text = ""
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301 return
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302 end
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303 local replace = replace_field.text
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304 if not regex_check_box.is_selected then
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305 find = regex_quote(find)
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306 replace = regex_quote_replacement(replace)
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307 end
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308 local r
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309 try
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310 r = regex(find)
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311 catch e
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312 output.text = "Regex error: "..e.get_message()
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313 return
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314 end
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36
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315 local new, n
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316 local action = event.action
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317 if action == "replace" then
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318 local selection = text_area.selected_text
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319 new, n = r.gsub(selection,replace)
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320 if n > 0 then
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321 text_area.selected_text = new
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322 end
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323 elseif action == "replace_all" then
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324 local text = text_area.text
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325 new, n = r.gsub(text,replace)
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326 if n > 0 then
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327 text_area.text = new
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328 end
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329 else
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330 error(action)
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34
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331 end
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332 output.text = n.." replacements"
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333 end
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28
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334 find_field = new_text_field{
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29
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335 constraints = "growx"
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30
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336 show_whitespace = true
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28
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337 action = "next"
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338 action_listener = find_match
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339 }
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34
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340 replace_field = new_text_field{
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341 constraints = "growx"
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342 show_whitespace = true
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36
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343 action = "replace"
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34
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344 action_listener = replace_match
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345 }
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33
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346 regex_check_box = new_check_box{
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347 text = "Use Regex"
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348 }
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28
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349 output = new_label{
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29
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350 constraints = "span"
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28
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351 }
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29
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352 local find_panel = new_panel{
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353 constraints = "growy 0,growx"
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354 layout = new_mig_layout("","[][grow][grow 0]")
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355 visible = false
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356 children = {
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357 new_label{
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358 constraints = "right"
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359 text = "Find:"
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360 }
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361 find_field
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30
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362 new_button{
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363 constraints = "grow"
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364 text = "Find Next"
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365 action = "next"
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366 action_listener = find_match
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367 }
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368 new_button{
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369 constraints = "grow,wrap"
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370 text = "Find Previous"
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371 action = "previous"
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372 action_listener = find_match
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29
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373 }
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374 new_label{
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375 constraints = "right"
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376 text = "Replace:"
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25
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377 }
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34
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378 replace_field
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29
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379 new_button{
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30
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380 constraints = "grow"
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29
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381 text = "Replace"
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34
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382 tool_tip_text = "Replace matches in selected text"
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36
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383 action = "replace"
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34
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384 action_listener = replace_match
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29
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385 }
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30
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386 new_button{
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387 constraints = "grow,wrap"
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388 text = "Replace All"
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36
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389 action = "replace_all"
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390 action_listener = replace_match
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30
|
391 }
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31
|
392 new_panel{
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393 constraints = "span,wrap"
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|
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394 layout = new_mig_layout("insets 0,gap 16px")
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|
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395 children = {
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33
|
396 regex_check_box
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|
31
|
397 new_button{
|
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32
|
398 text = "Learn About Regular Expressions"
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|
31
|
399 }
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|
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400 }
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|
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401 }
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29
|
402 output
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25
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403 }
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22
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404 }
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29
|
405 function window.show_find_panel(visible)
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|
|
406 find_panel.visible = visible
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|
|
407 if visible then
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408 find_field.request_focus_in_window()
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18
|
409 end
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|
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410 end
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33
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411 function window.find_case_insensitive(_)
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|
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412 find_panel.visible = true
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|
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413 window.find_menu_item.is_selected = true
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|
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414 regex_check_box.is_selected = true
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415 find_field.text = "(?i)\Q\E"
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|
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416 find_field.set_selection(7)
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417 find_field.request_focus_in_window()
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36
|
418 output.text = [[Put search text between "\Q" and "\E"]]
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|
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419 end
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|
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420 function window.tabs_to_spaces(_)
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|
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421 find_panel.visible = true
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422 window.find_menu_item.is_selected = true
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|
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423 regex_check_box.is_selected = true
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424 find_field.text = [[(?m)^(\t*)\t]]
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425 local spaces = repeated( " ", text_area.tab_size )
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426 replace_field.text = "$1"..spaces
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427 output.text = [[Do "Replace All" until 0 replacements]]
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|
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428 end
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|
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429 function window.spaces_to_tabs(_)
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|
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430 find_panel.visible = true
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|
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431 window.find_menu_item.is_selected = true
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|
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432 regex_check_box.is_selected = true
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|
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433 local tab_size = text_area.tab_size
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|
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434 find_field.text = `%>(?m)^(( {<%=tab_size%>})*) {<%=tab_size%>}<%`
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|
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435 replace_field.text = "$1\t"
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|
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436 output.text = [[Do "Replace All" until 0 replacements]]
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|
33
|
437 end
|
|
29
|
438 return find_panel
|
|
18
|
439 end
|
|
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440
|
|
0
|
441 local n_windows = 0
|
|
5
|
442 local documents = {}
|
|
0
|
443
|
|
1
|
444 function new_window(file)
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5
|
445 local window = {}
|
|
7
|
446 window.has_file = file~=nil and file.is_file()
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|
24
|
447 local text_area = new_text_area{
|
|
|
448 wrap_style_word = true
|
|
|
449 line_wrap = true
|
|
|
450 tab_size = 4
|
|
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451 font = { family="Monospaced", size=13 }
|
|
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452 }
|
|
|
453 window.text_area = text_area
|
|
5
|
454 local title = file and file.canonical().to_string() or "new"
|
|
|
455 if file ~= nil then
|
|
|
456 local document = documents[title]
|
|
|
457 if document == nil then
|
|
|
458 documents[title] = text_area.document
|
|
|
459 else
|
|
|
460 text_area.document = document
|
|
|
461 end
|
|
|
462 if file.is_file() then
|
|
|
463 text_area.text = file.read_text()
|
|
20
|
464 text_area.document.clear_unedited()
|
|
5
|
465 end
|
|
1
|
466 end
|
|
24
|
467 text_area.set_selection(0)
|
|
29
|
468 local find_panel = make_find_panel(window)
|
|
24
|
469 local frame = new_frame{
|
|
29
|
470 preferred_size = { width=700, height=700 }
|
|
|
471 content_pane = new_panel{
|
|
|
472 layout = new_mig_layout("insets 0,wrap,fill,hidemode 3","","[][grow 0]")
|
|
|
473 children = {
|
|
|
474 new_scroll_pane{
|
|
|
475 constraints = "grow"
|
|
|
476 view = text_area
|
|
|
477 row_header_view = new_text_area_line_numbers{
|
|
|
478 text_area = text_area
|
|
|
479 foreground_color = int_to_color(0x888888)
|
|
|
480 border = create_empty_border(0,8,0,8)
|
|
|
481 }
|
|
|
482 }
|
|
|
483 find_panel
|
|
24
|
484 }
|
|
|
485 }
|
|
|
486 }
|
|
|
487 window.frame = frame
|
|
|
488 frame.add_close_listener(function()
|
|
|
489 n_windows = n_windows - 1
|
|
|
490 if n_windows == 0 then
|
|
|
491 Luan.exit()
|
|
|
492 end
|
|
|
493 end)
|
|
10
|
494 local function set_title()
|
|
|
495 local s = title
|
|
|
496 if not text_area.document.is_unedited() then
|
|
|
497 s = s.." *"
|
|
|
498 end
|
|
|
499 frame.title = s
|
|
|
500 end
|
|
|
501 set_title()
|
|
24
|
502 window.set_title = set_title -- dont gc
|
|
10
|
503 text_area.document.add_undo_listener(set_title)
|
|
5
|
504 function window.open()
|
|
|
505 local file_chooser = frame.file_chooser_load()
|
|
|
506 if file ~= nil then
|
|
|
507 file_chooser.directory = file.parent()
|
|
|
508 end
|
|
|
509 file_chooser.visible = true
|
|
|
510 local new_file = file_chooser.file
|
|
|
511 if new_file ~= nil then
|
|
|
512 new_window(new_file)
|
|
|
513 end
|
|
|
514 end
|
|
|
515 function window.save()
|
|
|
516 if file == nil then
|
|
|
517 local file_chooser = frame.file_chooser_save()
|
|
|
518 file_chooser.visible = true
|
|
|
519 file = file_chooser.file
|
|
|
520 if file == nil then
|
|
7
|
521 return false
|
|
5
|
522 end
|
|
|
523 title = file.canonical().to_string()
|
|
|
524 frame.title = title
|
|
|
525 documents[title] = text_area.document
|
|
|
526 end
|
|
|
527 file.write_text(text_area.text)
|
|
10
|
528 text_area.document.set_unedited()
|
|
7
|
529 return true
|
|
|
530 end
|
|
|
531 function window.revert()
|
|
15
|
532 local selection = text_area.get_selection()
|
|
7
|
533 local text = file.read_text()
|
|
|
534 text_area.text = text
|
|
15
|
535 text_area.set_selection(min(selection,#text+1))
|
|
10
|
536 text_area.document.set_unedited()
|
|
5
|
537 end
|
|
15
|
538 local function selection_lines()
|
|
|
539 local start_seletion, end_selection = text_area.get_selection()
|
|
|
540 local end_ = end_selection == start_seletion and end_selection or end_selection - 1
|
|
|
541 local start_line = text_area.get_line_from_position(start_seletion)
|
|
|
542 local end_line = text_area.get_line_from_position(end_)
|
|
|
543 local start_pos = text_area.get_line_start_position(start_line)
|
|
|
544 local end_pos = text_area.get_line_end_position(end_line)
|
|
|
545 local text = text_area.text
|
|
|
546 text = sub_string(text,start_pos,end_pos-2)
|
|
|
547 return {
|
|
|
548 text = text
|
|
|
549 start_pos = start_pos
|
|
|
550 length = #text
|
|
|
551 lines = end_line - start_line + 1
|
|
|
552 start_seletion = start_seletion
|
|
|
553 end_selection = end_selection
|
|
|
554 }
|
|
|
555 end
|
|
|
556 function window.indent()
|
|
|
557 local r = selection_lines()
|
|
|
558 local text = r.text
|
|
|
559 local start_pos = r.start_pos
|
|
|
560 text = "\t"..replace(text,"\n","\n\t")
|
|
|
561 text_area.replace(start_pos,r.length,text)
|
|
|
562 --logger.info(stringify{text_area.get_selection()})
|
|
|
563 text_area.set_selection( r.start_seletion+1, r.end_selection+r.lines )
|
|
|
564 end
|
|
|
565 function window.unindent()
|
|
|
566 local r = selection_lines()
|
|
|
567 local text = r.text
|
|
|
568 text = "\n"..text
|
|
|
569 local start_seletion = r.start_seletion
|
|
|
570 if starts_with(text,"\n\t") then
|
|
|
571 start_seletion = start_seletion - 1
|
|
|
572 end
|
|
|
573 local len1 = #text
|
|
|
574 text = replace(text,"\n\t","\n")
|
|
|
575 local len2 = #text
|
|
|
576 local end_selection = r.end_selection - (len1 - len2)
|
|
|
577 text = sub_string(text,2)
|
|
|
578 text_area.replace(r.start_pos,r.length,text)
|
|
|
579 text_area.set_selection(start_seletion,end_selection)
|
|
|
580 end
|
|
16
|
581 function window.cursor_column()
|
|
|
582 local cursor_pos = text_area.get_selection()
|
|
|
583 local line = text_area.get_line_from_position(cursor_pos)
|
|
|
584 local start_line_pos = text_area.get_line_start_position(line)
|
|
|
585 return cursor_pos - start_line_pos + 1
|
|
|
586 end
|
|
17
|
587 function window.goto(line)
|
|
|
588 local pos = text_area.get_line_start_position(line)
|
|
|
589 text_area.set_selection(pos)
|
|
|
590 end
|
|
29
|
591 add_menu_bar(window)
|
|
0
|
592 frame.pack()
|
|
|
593 frame.visible = true
|
|
|
594 text_area.request_focus_in_window()
|
|
|
595 n_windows = n_windows + 1
|
|
|
596 end
|
|
|
597
|
|
1
|
598 Swing.run(function()
|
|
3
|
599 local args = Luan.arg
|
|
|
600 if #args == 0 then
|
|
|
601 new_window()
|
|
|
602 else
|
|
|
603 for _, arg in ipairs(args) do
|
|
|
604 local file = new_file(arg)
|
|
|
605 new_window(file)
|
|
|
606 end
|
|
|
607 end
|
|
1
|
608 end)
|
