Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/galaxy/util/jstree.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 import copy |
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2 import os |
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3 from collections import namedtuple |
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4 |
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5 import dictobj |
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6 |
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7 Path = namedtuple('Path', ('path', 'id', 'options')) |
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8 |
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9 |
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10 class Node(dictobj.DictionaryObject): |
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11 """ |
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12 Copyright 2012 "Grim Apps" |
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13 |
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14 Licensed under the Apache License, Version 2.0 (the "License"); |
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15 you may not use this file except in compliance with the License. |
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16 You may obtain a copy of the License at |
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17 |
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18 http://www.apache.org/licenses/LICENSE-2.0 |
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19 |
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20 Unless required by applicable law or agreed to in writing, software |
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21 distributed under the License is distributed on an "AS IS" BASIS, |
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22 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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23 See the License for the specific language governing permissions and |
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24 limitations under the License. |
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25 |
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26 Helper class written by William Grim - grimwm |
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27 Original repo: https://github.com/grimwm/py-jstree |
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28 Code adjusted according to the idea of Frank Blechschmidt - FraBle |
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29 Thank you! |
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30 ************************ |
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31 This class exists as a helper to the JSTree. Its "jsonData" method can |
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32 generate sub-tree JSON without putting the logic directly into the JSTree. |
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33 |
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34 This data structure is only semi-immutable. The JSTree uses a directly |
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35 iterative (i.e. no stack is managed) builder pattern to construct a |
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36 tree out of paths. Therefore, the children are not known in advance, and |
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37 we have to keep the children attribute mutable. |
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38 """ |
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39 |
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40 def __init__(self, path, oid, **kwargs): |
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41 """ |
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42 kwargs allows users to pass arbitrary information into a Node that |
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43 will later be output in jsonData(). It allows for more advanced |
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44 configuration than the default path handling that JSTree currently allows. |
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45 For example, users may want to pass "attr" or some other valid jsTree options. |
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46 |
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47 Example: |
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48 >>> node = Node('a', None) |
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49 >>> assert node._items == {'text': 'a', 'children': dictobj.MutableDictionaryObject({})} |
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50 >>> assert node.jsonData() == {'text': 'a'} |
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51 |
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52 >>> node = Node('a', 1) |
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53 >>> assert node._items == {'text': 'a', 'children': dictobj.MutableDictionaryObject({}), 'li_attr': dictobj.DictionaryObject({'id': 1}), 'id': 1} |
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54 >>> assert node.jsonData() == {'text': 'a', 'id': 1, 'li_attr': {'id': 1}} |
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55 |
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56 >>> node = Node('a', 5, icon="folder", state = {'opened': True}) |
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57 >>> assert node._items == {'text': 'a', 'id': 5, 'state': dictobj.DictionaryObject({'opened': True}), 'children': dictobj.MutableDictionaryObject({}), 'li_attr': dictobj.DictionaryObject({'id': 5}), 'icon': 'folder'} |
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58 >>> assert node.jsonData() == {'text': 'a', 'state': {'opened': True}, 'id': 5, 'li_attr': {'id': 5}, 'icon': 'folder'} |
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59 """ |
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60 super().__init__() |
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61 |
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62 children = kwargs.get('children', {}) |
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63 if len([key for key in children if not isinstance(children[key], Node)]): |
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64 raise TypeError( |
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65 "One or more children were not instances of '%s'" % Node.__name__) |
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66 if 'children' in kwargs: |
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67 del kwargs['children'] |
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68 self._items['children'] = dictobj.MutableDictionaryObject(children) |
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69 |
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70 if oid is not None: |
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71 li_attr = kwargs.get('li_attr', {}) |
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72 li_attr['id'] = oid |
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73 kwargs['li_attr'] = li_attr |
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74 self._items['id'] = oid |
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75 |
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76 self._items.update(dictobj.DictionaryObject(**kwargs)) |
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77 self._items['text'] = path |
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78 |
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79 def jsonData(self): |
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80 children = [self.children[k].jsonData() for k in sorted(self.children)] |
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81 output = {} |
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82 for k in self._items: |
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83 if 'children' == k: |
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84 continue |
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85 if isinstance(self._items[k], dictobj.DictionaryObject): |
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86 output[k] = self._items[k].asdict() |
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87 else: |
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88 output[k] = self._items[k] |
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89 if len(children): |
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90 output['children'] = children |
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91 return output |
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92 |
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93 |
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94 class JSTree(dictobj.DictionaryObject): |
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95 """ |
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96 An immutable dictionary-like object that converts a list of "paths" |
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97 into a tree structure suitable for jQuery's jsTree. |
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98 """ |
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99 |
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100 def __init__(self, paths, **kwargs): |
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101 """ |
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102 Take a list of paths and put them into a tree. Paths with the same prefix should |
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103 be at the same level in the tree. |
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104 |
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105 kwargs may be standard jsTree options used at all levels in the tree. These will be outputted |
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106 in the JSON. |
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107 |
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108 """ |
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109 if len([p for p in paths if not isinstance(p, Path)]): |
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110 raise TypeError( |
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111 "All paths must be instances of '%s'" % Path.__name__) |
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112 |
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113 super().__init__() |
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114 |
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115 root = Node('', None, **kwargs) |
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116 for path in sorted(paths): |
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117 curr = root |
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118 subpaths = path.path.split(os.path.sep) |
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119 for i, subpath in enumerate(subpaths): |
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120 if subpath not in curr.children: |
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121 opt = copy.deepcopy(kwargs) |
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122 if len(subpaths) - 1 == i: |
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123 oid = path.id |
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124 opt.update(path.options) if path.options is not None else None |
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125 else: |
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126 oid = None |
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127 curr.children[subpath] = Node(subpath, oid, **opt) |
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128 # oid = path.id if len(subpaths) - 1 == i else None |
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129 # curr.children[subpath] = Node(subpath, oid, **kwargs) |
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130 curr = curr.children[subpath] |
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131 self._items['_root'] = root |
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132 |
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133 def pretty(self, root=None, depth=0, spacing=2): |
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134 """ |
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135 Create a "pretty print" represenation of the tree with customized indentation at each |
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136 level of the tree. |
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137 """ |
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138 if root is None: |
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139 root = self._root |
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140 fmt = "%s%s/" if root.children else "%s%s" |
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141 s = fmt % (" " * depth * spacing, root.text) |
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142 for child in root.children: |
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143 child = root.children[child] |
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144 s += "\n%s" % self.pretty(child, depth + 1, spacing) |
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145 return s |
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146 |
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147 def jsonData(self): |
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148 """ |
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149 Returns a copy of the internal tree in a JSON-friendly format, |
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150 ready for consumption by jsTree. The data is represented as a |
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151 list of dictionaries, each of which are our internal nodes. |
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152 |
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153 """ |
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154 return [self._root.children[k].jsonData() for k in sorted(self._root.children)] |