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37
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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 local ipairs = Luan.ipairs or error()
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4 local range = Luan.range or error()
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5 local String = require "luan:String.luan"
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6 local regex = String.regex or error()
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7 local regex_quote = String.regex_quote or error()
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8 local regex_quote_replacement = String.regex_quote_replacement or error()
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9 local repeated = String.repeated or error()
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10 local new_text_field = require("luan:swing/Text_field.luan").new or error()
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11 local new_check_box = require("luan:swing/Check_box.luan").new or error()
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12 local new_label = require("luan:swing/Label.luan").new or error()
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13 local new_panel = require("luan:swing/Component.luan").new_panel or error()
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14 local Layout = require "luan:swing/Layout.luan"
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15 local new_mig_layout = Layout.new_mig_layout or error()
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16 local new_button = require("luan:swing/Button.luan").new or error()
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17 local Swing = require "luan:swing/Swing.luan"
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18 local browse = Swing.browse or error()
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19
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20
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87
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21 local find_text = ""
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88
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22 local replace_text = ""
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91
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23 local is_regex = false
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87
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24
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37
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25 local function get_matches(text,s)
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26 local r = regex(s)
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27 local matches = {}
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28 local i = 1
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29 local n = #text
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30 while i <= n do
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31 local j1, j2 = r.find(text,i)
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32 if j1 == nil then
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33 break
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34 end
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35 j2 = j2 + 1
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36 if j1 == j2 then
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37 i = j2 + 1
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38 else
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39 matches[#matches+1] = { start=j1, end_=j2 }
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40 i = j2
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41 end
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42 end
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43 return matches
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44 end
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45
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46 local function make_find_panel(window)
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47 local text_area = window.text_area
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48 local status_bar = window.status_bar
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49 local find_field, replace_field, regex_check_box
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50 local function find_match(event)
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51 --logger.info("action "..event.action)
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52 local s = find_field.text
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53 if #s == 0 then
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54 status_bar.text = " "
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55 return
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56 end
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87
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57 find_text = s
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91
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58 is_regex = regex_check_box.is_selected
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59 if not is_regex then
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37
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60 s = regex_quote(s)
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61 end
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62 local matches
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63 try
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64 matches = get_matches( text_area.text, s )
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65 catch e
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66 status_bar.text = "Regex error: "..e.get_message()
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67 return
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68 end
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69 text_area.set_hightlights(matches)
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70 local n_matches = #matches
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71 if n_matches == 0 then
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72 status_bar.text = "0 matches"
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73 return
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74 end
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75 local action = event.action
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76 if action == "next" then
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77 local _, pos = text_area.get_selection()
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78 for i, match in ipairs(matches) do
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79 if match.start >= pos then
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80 text_area.set_selection( match.start, match.end_ )
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81 status_bar.text = i.." of "..n_matches.." matches"
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82 return
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83 end
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84 end
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85 local match = matches[1]
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86 text_area.set_selection( match.start, match.end_ )
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87 status_bar.text = "1 of "..n_matches.." matches; wrapped past end"
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88 elseif action == "previous" then
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89 local pos = text_area.get_selection()
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90 for i in range(n_matches,1,-1) do
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91 local match = matches[i]
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92 if match.end_ <= pos then
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93 text_area.set_selection( match.start, match.end_ )
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94 status_bar.text = i.." of "..n_matches.." matches"
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95 return
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96 end
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97 end
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98 local match = matches[n_matches]
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99 text_area.set_selection( match.start, match.end_ )
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100 status_bar.text = n_matches.." of "..n_matches.." matches; wrapped past end"
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101 else
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102 error(action)
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103 end
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104 end
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105 local function replace_match(event)
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106 local find = find_field.text
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107 if #find == 0 then
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108 status_bar.text = " "
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109 return
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110 end
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88
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111 local replace = replace_field.text
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87
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112 find_text = find
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88
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113 replace_text = replace
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91
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114 is_regex = regex_check_box.is_selected
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115 if not is_regex then
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37
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116 find = regex_quote(find)
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117 replace = regex_quote_replacement(replace)
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118 end
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119 local r
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120 try
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121 r = regex(find)
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122 catch e
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123 status_bar.text = "Regex error: "..e.get_message()
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124 return
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125 end
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126 local new, n
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127 local action = event.action
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128 if action == "replace" then
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129 local selection = text_area.selected_text
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130 new, n = r.gsub(selection,replace)
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131 if n > 0 then
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132 text_area.selected_text = new
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133 end
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134 elseif action == "replace_all" then
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135 local text = text_area.text
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136 new, n = r.gsub(text,replace)
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137 if n > 0 then
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138 text_area.text = new
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139 end
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140 else
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141 error(action)
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142 end
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143 status_bar.text = n.." replacements"
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144 end
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145 find_field = new_text_field{
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146 constraints = "growx"
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147 whitespace_visible = true
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148 action = "next"
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149 action_listener = find_match
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150 }
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151 replace_field = new_text_field{
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152 constraints = "growx"
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153 whitespace_visible = true
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154 action = "replace"
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155 action_listener = replace_match
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156 }
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157 regex_check_box = new_check_box{
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158 text = "Use Regex"
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159 }
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160 local find_panel = new_panel{
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161 constraints = "growy 0,growx"
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162 layout = new_mig_layout("insets 8 16 0 16","[][grow][grow 0]")
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69
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163 is_visible = false
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37
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164 children = {
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165 new_label{
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166 constraints = "right"
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167 text = "Find:"
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168 }
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169 find_field
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170 new_button{
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171 constraints = "grow"
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172 text = "Find Next"
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173 action = "next"
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174 action_listener = find_match
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175 }
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176 new_button{
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177 constraints = "grow,wrap"
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178 text = "Find Previous"
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179 action = "previous"
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180 action_listener = find_match
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181 }
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182 new_label{
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183 constraints = "right"
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184 text = "Replace:"
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185 }
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186 replace_field
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187 new_button{
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188 constraints = "grow"
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189 text = "Replace"
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190 tool_tip_text = "Replace matches in selected text"
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191 action = "replace"
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192 action_listener = replace_match
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193 }
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194 new_button{
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195 constraints = "grow,wrap"
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196 text = "Replace All"
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197 action = "replace_all"
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198 action_listener = replace_match
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199 }
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200 new_panel{
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70
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201 constraints = "span,grow,wrap"
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37
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202 layout = new_mig_layout("insets 0,gap 16px")
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203 children = {
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204 regex_check_box
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205 new_button{
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206 text = "Learn About Regular Expressions"
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207 action_listener = function(_)
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208 browse("https://www.reactionary.software/learn.html#regex")
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209 end
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210 }
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70
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211 new_button{
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212 constraints = "pushx, align right"
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213 text = "Close"
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214 action_listener = function(_)
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215 window.hide_find_panel()
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216 end
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217 }
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37
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218 }
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219 }
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220 }
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221 }
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70
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222 function window.show_find_panel()
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223 find_panel.is_visible = true
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87
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224 find_field.text = find_text
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70
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225 find_field.request_focus_in_window()
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226 find_field.select_all()
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88
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227 replace_field.text = replace_text
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91
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228 regex_check_box.is_selected = is_regex
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70
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229 end
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230 function window.hide_find_panel()
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231 find_panel.is_visible = false
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232 text_area.clear_hightlights()
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37
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233 end
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234 function window.find_case_insensitive(_)
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70
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235 find_panel.is_visible = true
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37
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236 regex_check_box.is_selected = true
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237 find_field.text = "(?i)\Q\E"
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238 find_field.set_selection(7)
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239 find_field.request_focus_in_window()
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240 status_bar.text = [[Put search text between "\Q" and "\E"]]
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241 end
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242 function window.tabs_to_spaces(_)
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70
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243 find_panel.is_visible = true
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37
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244 regex_check_box.is_selected = true
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245 find_field.text = [[(?m)^(\t*)\t]]
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246 local spaces = repeated( " ", text_area.tab_size )
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247 replace_field.text = "$1"..spaces
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248 status_bar.text = [[Do "Replace All" until 0 replacements]]
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249 end
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250 function window.spaces_to_tabs(_)
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70
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251 find_panel.is_visible = true
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37
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252 regex_check_box.is_selected = true
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253 local tab_size = text_area.tab_size
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254 find_field.text = `%>(?m)^(( {<%=tab_size%>})*) {<%=tab_size%>}<%`
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255 replace_field.text = "$1\t"
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256 status_bar.text = [[Do "Replace All" until 0 replacements]]
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257 end
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258 return find_panel
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259 end
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260
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261 return make_find_panel
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