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