Mercurial > hg
annotate mercurial/registrar.py @ 31758:04ec317b8128
hgweb: expose a followlines UI in filerevision view
In filerevision view (/file/<rev>/<fname>) we add some event listeners on
mouse clicks of <span> elements in the <pre class="sourcelines"> block.
Those listeners will capture a range of lines selected between two mouse
clicks and a box inviting to follow the history of selected lines will then
show up. Selected lines (i.e. the block of lines) get a CSS class which make
them highlighted. Selection can be cancelled (and restarted) by either
clicking on the cancel ("x") button in the invite box or clicking on any other
source line. Also clicking twice on the same line will abort the selection and
reset event listeners to restart the process.
As a first step, this action is only advertised by the "cursor: cell" CSS rule
on source lines elements as any other mechanisms would make the code
significantly more complicated. This might be improved later.
All JavaScript code lives in a new "linerangelog.js" file, sourced in
filerevision template (only in "paper" style for now).
author | Denis Laxalde <denis.laxalde@logilab.fr> |
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date | Wed, 29 Mar 2017 22:26:16 +0200 |
parents | b52e8a4f4c0f |
children | 45761ef1bc93 |
rev | line source |
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1 # registrar.py - utilities to register function for specific purpose |
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2 # |
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3 # Copyright FUJIWARA Katsunori <foozy@lares.dti.ne.jp> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 from . import ( |
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11 error, |
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12 pycompat, |
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13 util, |
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14 ) |
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15 |
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16 class _funcregistrarbase(object): |
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17 """Base of decorator to register a function for specific purpose |
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18 |
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19 This decorator stores decorated functions into own dict 'table'. |
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20 |
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21 The least derived class can be defined by overriding 'formatdoc', |
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22 for example:: |
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23 |
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24 class keyword(_funcregistrarbase): |
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25 _docformat = ":%s: %s" |
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26 |
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27 This should be used as below: |
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28 |
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29 keyword = registrar.keyword() |
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30 |
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31 @keyword('bar') |
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32 def barfunc(*args, **kwargs): |
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33 '''Explanation of bar keyword .... |
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34 ''' |
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35 pass |
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36 |
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37 In this case: |
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38 |
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39 - 'barfunc' is stored as 'bar' in '_table' of an instance 'keyword' above |
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40 - 'barfunc.__doc__' becomes ":bar: Explanation of bar keyword" |
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41 """ |
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42 def __init__(self, table=None): |
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43 if table is None: |
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44 self._table = {} |
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45 else: |
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46 self._table = table |
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47 |
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48 def __call__(self, decl, *args, **kwargs): |
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49 return lambda func: self._doregister(func, decl, *args, **kwargs) |
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50 |
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51 def _doregister(self, func, decl, *args, **kwargs): |
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52 name = self._getname(decl) |
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53 |
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54 if name in self._table: |
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55 msg = 'duplicate registration for name: "%s"' % name |
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56 raise error.ProgrammingError(msg) |
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57 |
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58 if func.__doc__ and not util.safehasattr(func, '_origdoc'): |
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59 doc = func.__doc__.strip() |
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60 func._origdoc = doc |
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61 func.__doc__ = self._formatdoc(decl, doc) |
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62 |
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63 self._table[name] = func |
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64 self._extrasetup(name, func, *args, **kwargs) |
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65 |
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66 return func |
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67 |
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68 def _parsefuncdecl(self, decl): |
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69 """Parse function declaration and return the name of function in it |
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70 """ |
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71 i = decl.find('(') |
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72 if i >= 0: |
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73 return decl[:i] |
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74 else: |
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75 return decl |
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76 |
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77 def _getname(self, decl): |
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78 """Return the name of the registered function from decl |
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79 |
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80 Derived class should override this, if it allows more |
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81 descriptive 'decl' string than just a name. |
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82 """ |
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83 return decl |
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84 |
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85 _docformat = None |
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86 |
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87 def _formatdoc(self, decl, doc): |
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88 """Return formatted document of the registered function for help |
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89 |
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90 'doc' is '__doc__.strip()' of the registered function. |
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91 """ |
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92 return self._docformat % (decl, doc) |
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93 |
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94 def _extrasetup(self, name, func): |
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95 """Execute exra setup for registered function, if needed |
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96 """ |
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97 pass |
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98 |
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99 class revsetpredicate(_funcregistrarbase): |
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100 """Decorator to register revset predicate |
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101 |
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102 Usage:: |
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103 |
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104 revsetpredicate = registrar.revsetpredicate() |
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105 |
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106 @revsetpredicate('mypredicate(arg1, arg2[, arg3])') |
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107 def mypredicatefunc(repo, subset, x): |
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108 '''Explanation of this revset predicate .... |
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109 ''' |
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110 pass |
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111 |
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112 The first string argument is used also in online help. |
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113 |
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114 Optional argument 'safe' indicates whether a predicate is safe for |
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115 DoS attack (False by default). |
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116 |
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117 Optional argument 'takeorder' indicates whether a predicate function |
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118 takes ordering policy as the last argument. |
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119 |
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120 'revsetpredicate' instance in example above can be used to |
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121 decorate multiple functions. |
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122 |
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123 Decorated functions are registered automatically at loading |
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124 extension, if an instance named as 'revsetpredicate' is used for |
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125 decorating in extension. |
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126 |
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127 Otherwise, explicit 'revset.loadpredicate()' is needed. |
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128 """ |
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129 _getname = _funcregistrarbase._parsefuncdecl |
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130 _docformat = pycompat.sysstr("``%s``\n %s") |
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131 |
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132 def _extrasetup(self, name, func, safe=False, takeorder=False): |
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133 func._safe = safe |
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134 func._takeorder = takeorder |
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135 |
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136 class filesetpredicate(_funcregistrarbase): |
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137 """Decorator to register fileset predicate |
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138 |
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139 Usage:: |
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140 |
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141 filesetpredicate = registrar.filesetpredicate() |
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142 |
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143 @filesetpredicate('mypredicate()') |
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144 def mypredicatefunc(mctx, x): |
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145 '''Explanation of this fileset predicate .... |
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146 ''' |
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147 pass |
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148 |
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149 The first string argument is used also in online help. |
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150 |
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151 Optional argument 'callstatus' indicates whether a predicate |
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152 implies 'matchctx.status()' at runtime or not (False, by |
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153 default). |
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154 |
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155 Optional argument 'callexisting' indicates whether a predicate |
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156 implies 'matchctx.existing()' at runtime or not (False, by |
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157 default). |
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158 |
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159 'filesetpredicate' instance in example above can be used to |
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160 decorate multiple functions. |
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161 |
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162 Decorated functions are registered automatically at loading |
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163 extension, if an instance named as 'filesetpredicate' is used for |
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164 decorating in extension. |
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165 |
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166 Otherwise, explicit 'fileset.loadpredicate()' is needed. |
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167 """ |
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168 _getname = _funcregistrarbase._parsefuncdecl |
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169 _docformat = pycompat.sysstr("``%s``\n %s") |
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170 |
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171 def _extrasetup(self, name, func, callstatus=False, callexisting=False): |
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172 func._callstatus = callstatus |
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173 func._callexisting = callexisting |
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174 |
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175 class _templateregistrarbase(_funcregistrarbase): |
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176 """Base of decorator to register functions as template specific one |
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177 """ |
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178 _docformat = pycompat.sysstr(":%s: %s") |
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179 |
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180 class templatekeyword(_templateregistrarbase): |
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181 """Decorator to register template keyword |
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182 |
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183 Usage:: |
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184 |
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185 templatekeyword = registrar.templatekeyword() |
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186 |
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187 @templatekeyword('mykeyword') |
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188 def mykeywordfunc(repo, ctx, templ, cache, revcache, **args): |
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189 '''Explanation of this template keyword .... |
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190 ''' |
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191 pass |
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192 |
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193 The first string argument is used also in online help. |
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194 |
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195 'templatekeyword' instance in example above can be used to |
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196 decorate multiple functions. |
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197 |
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198 Decorated functions are registered automatically at loading |
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199 extension, if an instance named as 'templatekeyword' is used for |
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200 decorating in extension. |
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201 |
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202 Otherwise, explicit 'templatekw.loadkeyword()' is needed. |
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203 """ |
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204 |
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205 class templatefilter(_templateregistrarbase): |
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206 """Decorator to register template filer |
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207 |
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208 Usage:: |
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209 |
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210 templatefilter = registrar.templatefilter() |
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211 |
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212 @templatefilter('myfilter') |
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213 def myfilterfunc(text): |
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214 '''Explanation of this template filter .... |
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215 ''' |
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216 pass |
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217 |
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218 The first string argument is used also in online help. |
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219 |
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220 'templatefilter' instance in example above can be used to |
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221 decorate multiple functions. |
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222 |
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223 Decorated functions are registered automatically at loading |
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224 extension, if an instance named as 'templatefilter' is used for |
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225 decorating in extension. |
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226 |
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227 Otherwise, explicit 'templatefilters.loadkeyword()' is needed. |
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228 """ |
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229 |
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230 class templatefunc(_templateregistrarbase): |
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231 """Decorator to register template function |
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232 |
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233 Usage:: |
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234 |
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235 templatefunc = registrar.templatefunc() |
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236 |
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237 @templatefunc('myfunc(arg1, arg2[, arg3])') |
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238 def myfuncfunc(context, mapping, args): |
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239 '''Explanation of this template function .... |
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240 ''' |
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241 pass |
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242 |
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243 The first string argument is used also in online help. |
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244 |
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245 'templatefunc' instance in example above can be used to |
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246 decorate multiple functions. |
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247 |
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248 Decorated functions are registered automatically at loading |
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249 extension, if an instance named as 'templatefunc' is used for |
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250 decorating in extension. |
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251 |
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252 Otherwise, explicit 'templater.loadfunction()' is needed. |
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253 """ |
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254 _getname = _funcregistrarbase._parsefuncdecl |