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0
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1 local Luan = require "luan:Luan.luan"
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2 local error = Luan.error
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3
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3 local ipairs = Luan.ipairs or error()
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15
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4 local stringify = Luan.stringify or error()
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5 local String = require "luan:String.luan"
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6 local sub_string = String.sub or error()
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7 local replace = String.replace or error()
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8 local starts_with = String.starts_with or error()
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17
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9 local to_number = String.to_number or error()
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0
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10 local Io = require "luan:Io.luan"
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11 local print = Io.print or error()
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3
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12 local new_file = Io.schemes.file or error()
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7
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13 local Math = require "luan:Math.luan"
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14 local min = Math.min or error()
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0
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15 local Swing = require "luan:swing/Swing.luan"
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16 local new_frame = require("luan:swing/Frame.luan").new or error()
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17 local new_label = require("luan:swing/Label.luan").new or error()
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18 local new_text_area = require("luan:swing/Text_area.luan").new or error()
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19 local new_scroll_pane = require("luan:swing/Scroll_pane.luan").new or error()
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18
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20 local new_text_area_line_numbers = require("luan:swing/Text_area_line_numbers.luan").new or error()
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0
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21 local new_menu_bar = require("luan:swing/Menu_bar.luan").new or error()
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21
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22 local Menu = require "luan:swing/Menu.luan"
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23 local new_menu = Menu.new or error()
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24 local separator = Menu.separator or error()
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0
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25 local new_menu_item = require("luan:swing/Menu_item.luan").new or error()
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2
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26 local new_check_box_menu_item = require("luan:swing/Check_box_menu_item.luan").new or error()
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12
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27 local int_to_color = require("luan:swing/Color.luan").int_to_color or error()
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18
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28 local Border = require "luan:swing/Border.luan"
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29 local create_empty_border = Border.create_empty_border or error()
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30 local create_line_border = Border.create_line_border or error()
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31 local Layout = require "luan:swing/Layout.luan"
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32 local new_flow_layout = Layout.new_flow_layout or error()
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33 local new_box_layout = Layout.new_box_layout or error()
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25
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34 local new_mig_layout = Layout.new_mig_layout or error()
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16
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35 local Option_pane = require "luan:swing/Option_pane.luan"
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36 local show_message_dialog = Option_pane.show_message_dialog or error()
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17
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37 local show_input_dialog = Option_pane.show_input_dialog or error()
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18
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38 local new_dialog = require("luan:swing/Dialog.luan").new or error()
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39 local new_panel = require("luan:swing/Component.luan").new_panel or error()
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40 local new_button = require("luan:swing/Button.luan").new or error()
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25
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41 local new_text_field = require("luan:swing/Text_field.luan").new or error()
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0
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42 local Logging = require "luan:logging/Logging.luan"
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43 local logger = Logging.logger "editor"
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44
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45
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46 local new_window
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47
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20
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48 local function action_listener(fn)
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49 return function(_)
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50 fn()
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51 end
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52 end
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53
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1
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54 local function make_menu_bar(window)
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21
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55 local document = window.text_area.document
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56 local revert = new_menu_item{
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57 text = "Revert"
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58 enabled = window.has_file
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59 action_listener = action_listener(window.revert)
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60 }
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61 local undo = new_menu_item{
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62 text = "Undo"
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63 accelerator = "meta Z"
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64 action_listener = action_listener(document.undo)
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65 }
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66 local redo = new_menu_item{
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67 text = "Redo"
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68 accelerator = "meta shift Z"
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69 action_listener = action_listener(document.redo)
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70 }
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71 local function update_undo_redo()
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72 undo.set_enabled(document.can_undo())
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73 redo.set_enabled(document.can_redo())
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4
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74 end
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21
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75 window.update_undo_redo = update_undo_redo -- dont gc
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76 update_undo_redo()
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77 document.add_undo_listener(update_undo_redo)
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78
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79 return new_menu_bar{
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80 menus = {
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81 new_menu{
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82 text = "File"
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83 menu_items = {
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84 new_menu_item{
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85 text = "New File"
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86 accelerator = "meta N"
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87 action_listener = function(_)
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88 new_window()
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89 end
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90 }
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91 new_menu_item{
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92 text = "Open..."
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93 accelerator = "meta O"
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94 action_listener = action_listener(window.open)
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95 }
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96 new_menu_item{
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97 text = "Save"
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98 accelerator = "meta S"
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99 action_listener = function(_)
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100 if window.save() then
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101 revert.set_enabled(true)
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102 end
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103 end
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104 }
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105 revert
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106 }
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19
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107 }
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21
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108 new_menu{
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109 text = "Edit"
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110 menu_items = {
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111 undo
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112 redo
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113 separator
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114 new_menu_item{
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115 text = "Cut"
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116 accelerator = "meta X"
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117 action_listener = action_listener(window.text_area.cut)
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118 }
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119 new_menu_item{
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120 text = "Copy"
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121 accelerator = "meta C"
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122 action_listener = action_listener(window.text_area.copy)
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123 }
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124 new_menu_item{
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125 text = "Paste"
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126 accelerator = "meta V"
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127 action_listener = action_listener(window.text_area.paste)
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128 }
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129 separator
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130 new_menu_item{
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131 text = "Indent"
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132 accelerator = "meta CLOSE_BRACKET"
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133 action_listener = action_listener(window.indent)
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134 }
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135 new_menu_item{
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136 text = "Unindent"
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137 accelerator = "meta OPEN_BRACKET"
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138 action_listener = action_listener(window.unindent)
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139 }
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140 separator
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141 new_menu_item{
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142 text = "Select All"
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143 accelerator = "meta A"
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144 action_listener = action_listener(window.text_area.select_all)
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145 }
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146 separator
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147 new_menu_item{
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148 text = "Find and Replace"
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149 accelerator = "meta F"
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150 action_listener = action_listener(window.show_find_dialog)
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151 }
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152 }
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20
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153 }
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21
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154 new_menu{
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155 text = "View"
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156 menu_items = {
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157 new_check_box_menu_item{
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158 text = "Word Wrap"
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159 state = window.text_area.line_wrap
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160 action_listener = function(event)
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161 window.text_area.line_wrap = event.source.state
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162 end
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163 }
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164 new_check_box_menu_item{
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165 text = "Show Whitespace"
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166 action_listener = function(event)
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167 window.text_area.show_whitespace(event.source.state)
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168 end
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169 }
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170 new_menu_item{
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171 text = "Show Cursor Column"
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172 action_listener = function(_)
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173 show_message_dialog( window.frame, "Cursor Column: "..window.cursor_column() )
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174 end
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175 }
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176 new_menu_item{
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177 text = "Goto Line"
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178 accelerator = "meta G"
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179 action_listener = function(_)
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180 local input = show_input_dialog( window.frame, "Goto line" )
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181 --logger.info("input "..input)
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182 local line = input and to_number(input)
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183 if line ~= nil then
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184 window.goto(line)
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185 end
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186 end
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187 }
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188 }
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20
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189 }
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21
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190 }
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191 }
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0
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192 end
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193
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18
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194 local function make_find_dialog(window)
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23
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195 local dialog = new_dialog{
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196 owner_frame = window.frame
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25
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197 --[[
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23
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198 content_pane = new_panel{
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199 layout = function(this) return new_box_layout(this,"y_axis") end
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22
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200 children = {
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23
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201 new_panel{
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25
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202 layout = new_flow_layout()
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203 children = {
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204 new_text_field{
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205 columns = 10
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206 }
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207 }
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208 }
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209 new_panel{
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23
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210 layout = new_flow_layout("left")
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211 --border = create_empty_border(8,8,8,8)
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212 border = create_line_border(int_to_color(0))
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213 children = {
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214 new_button{
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215 text = "Find Next"
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216 }
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217 new_button{
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218 text = "Find Previous"
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219 }
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220 }
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22
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221 }
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222 }
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223 }
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25
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224 ]]
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225 --[[
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226 content_pane = new_panel{
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227 layout = new_grid_bag_layout()
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228 alignment_x = "left"
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229 border = create_line_border(int_to_color(0))
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230 children = {
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231 new_text_field{
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232 constraints = new_grid_bag_constraints{
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233 gridx = 1
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234 gridy = 1
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235 }
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236 columns = 10
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237 border = create_line_border(int_to_color(0))
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238 }
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239 new_panel{
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240 constraints = new_grid_bag_constraints{
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241 gridx = 1
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242 gridy = 2
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243 }
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244 layout = new_flow_layout("left")
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245 --border = create_empty_border(8,8,8,8)
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246 border = create_line_border(int_to_color(0))
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247 children = {
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248 new_button{
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249 text = "Find Next"
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250 }
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251 new_button{
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252 text = "Find Previous"
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253 }
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254 }
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255 }
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256 }
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257 }
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258 ]]
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259 ---[[
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260 content_pane = new_panel{
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261 layout = new_mig_layout("debug","[][grow]","[][grow,top]")
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262 children = {
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263 new_label{
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264 text = "Find Next:"
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265 }
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266 new_text_field{
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267 constraints = "wrap,growx"
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268 columns = 20
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269 }
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270 new_panel{
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271 constraints = "span,wrap"
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272 layout = new_mig_layout("debug,insets 0")
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273 --border = create_empty_border(8,8,8,8)
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274 --border = create_line_border(int_to_color(0))
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275 children = {
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276 new_button{
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277 constraints = "pad 0 -6 0 -6"
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278 text = "Find Next"
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279 }
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280 new_button{
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281 constraints = "pad 0 -18 0 -6, gap unrelated"
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282 text = "Find Previous"
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283 }
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284 }
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285 }
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286 new_panel{
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287 constraints = "span"
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288 layout = function(this) return new_box_layout(this,"x_axis") end
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289 children = {
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290 new_button{
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291 text = "Find Next"
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292 }
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293 new_button{
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294 text = "Find Previous"
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295 }
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296 }
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297 }
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298 }
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299 }
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300 --]]
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22
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301 }
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18
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302 dialog.pack()
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303 local was_shown = false
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304 function window.show_find_dialog()
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305 if not was_shown then
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306 was_shown = true
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307 dialog.move_into_owner()
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308 end
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309 dialog.visible = true
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310 end
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311 end
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312
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0
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313 local n_windows = 0
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5
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314 local documents = {}
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0
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315
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1
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316 function new_window(file)
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5
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317 local window = {}
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7
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318 window.has_file = file~=nil and file.is_file()
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24
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319 local text_area = new_text_area{
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320 rows = 10
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321 columns = 20
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322 wrap_style_word = true
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323 line_wrap = true
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324 tab_size = 4
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325 font = { family="Monospaced", size=13 }
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326 border = create_empty_border(0,4,0,4)
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327 }
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328 window.text_area = text_area
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5
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329 local title = file and file.canonical().to_string() or "new"
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330 if file ~= nil then
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331 local document = documents[title]
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332 if document == nil then
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333 documents[title] = text_area.document
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334 else
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335 text_area.document = document
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336 end
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337 if file.is_file() then
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338 text_area.text = file.read_text()
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20
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339 text_area.document.clear_unedited()
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5
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340 end
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1
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341 end
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24
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342 text_area.set_selection(0)
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343 local frame = new_frame{
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344 content_pane = new_scroll_pane{
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345 view = text_area
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346 row_header_view = new_text_area_line_numbers{
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347 text_area = text_area
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348 foreground_color = int_to_color(0x888888)
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349 border = create_empty_border(0,8,0,8)
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350 }
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351 }
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352 }
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353 window.frame = frame
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354 frame.add_close_listener(function()
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355 n_windows = n_windows - 1
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356 if n_windows == 0 then
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357 Luan.exit()
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358 end
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359 end)
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10
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360 local function set_title()
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361 local s = title
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362 if not text_area.document.is_unedited() then
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363 s = s.." *"
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364 end
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365 frame.title = s
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366 end
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367 set_title()
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24
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368 window.set_title = set_title -- dont gc
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10
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369 text_area.document.add_undo_listener(set_title)
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5
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370 function window.open()
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371 local file_chooser = frame.file_chooser_load()
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372 if file ~= nil then
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373 file_chooser.directory = file.parent()
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374 end
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375 file_chooser.visible = true
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376 local new_file = file_chooser.file
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377 if new_file ~= nil then
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378 new_window(new_file)
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379 end
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380 end
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|
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381 function window.save()
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382 if file == nil then
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383 local file_chooser = frame.file_chooser_save()
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384 file_chooser.visible = true
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385 file = file_chooser.file
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386 if file == nil then
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7
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387 return false
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5
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388 end
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389 title = file.canonical().to_string()
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390 frame.title = title
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391 documents[title] = text_area.document
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392 end
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393 file.write_text(text_area.text)
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10
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394 text_area.document.set_unedited()
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7
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395 return true
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396 end
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|
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397 function window.revert()
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15
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398 local selection = text_area.get_selection()
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7
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399 local text = file.read_text()
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400 text_area.text = text
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15
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401 text_area.set_selection(min(selection,#text+1))
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10
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402 text_area.document.set_unedited()
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5
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403 end
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15
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404 local function selection_lines()
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|
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405 local start_seletion, end_selection = text_area.get_selection()
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|
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406 local end_ = end_selection == start_seletion and end_selection or end_selection - 1
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407 local start_line = text_area.get_line_from_position(start_seletion)
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408 local end_line = text_area.get_line_from_position(end_)
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409 local start_pos = text_area.get_line_start_position(start_line)
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410 local end_pos = text_area.get_line_end_position(end_line)
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411 local text = text_area.text
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412 text = sub_string(text,start_pos,end_pos-2)
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413 return {
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414 text = text
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415 start_pos = start_pos
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416 length = #text
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417 lines = end_line - start_line + 1
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418 start_seletion = start_seletion
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419 end_selection = end_selection
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420 }
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421 end
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422 function window.indent()
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423 local r = selection_lines()
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424 local text = r.text
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425 local start_pos = r.start_pos
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426 text = "\t"..replace(text,"\n","\n\t")
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427 text_area.replace(start_pos,r.length,text)
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428 --logger.info(stringify{text_area.get_selection()})
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429 text_area.set_selection( r.start_seletion+1, r.end_selection+r.lines )
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430 end
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431 function window.unindent()
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432 local r = selection_lines()
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433 local text = r.text
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434 text = "\n"..text
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435 local start_seletion = r.start_seletion
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436 if starts_with(text,"\n\t") then
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437 start_seletion = start_seletion - 1
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438 end
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439 local len1 = #text
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440 text = replace(text,"\n\t","\n")
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441 local len2 = #text
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442 local end_selection = r.end_selection - (len1 - len2)
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443 text = sub_string(text,2)
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444 text_area.replace(r.start_pos,r.length,text)
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445 text_area.set_selection(start_seletion,end_selection)
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446 end
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16
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447 function window.cursor_column()
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448 local cursor_pos = text_area.get_selection()
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449 local line = text_area.get_line_from_position(cursor_pos)
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450 local start_line_pos = text_area.get_line_start_position(line)
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451 return cursor_pos - start_line_pos + 1
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452 end
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17
|
453 function window.goto(line)
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|
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454 local pos = text_area.get_line_start_position(line)
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|
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455 text_area.set_selection(pos)
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456 end
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18
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457 make_find_dialog(window)
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|
1
|
458 local menu_bar = make_menu_bar(window)
|
|
0
|
459 frame.set_menu_bar(menu_bar)
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|
|
460 frame.pack()
|
|
|
461 frame.visible = true
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|
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462 text_area.request_focus_in_window()
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|
|
463 n_windows = n_windows + 1
|
|
|
464 end
|
|
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465
|
|
1
|
466 Swing.run(function()
|
|
3
|
467 local args = Luan.arg
|
|
|
468 if #args == 0 then
|
|
|
469 new_window()
|
|
|
470 else
|
|
|
471 for _, arg in ipairs(args) do
|
|
|
472 local file = new_file(arg)
|
|
|
473 new_window(file)
|
|
|
474 end
|
|
|
475 end
|
|
1
|
476 end)
|
