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