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