Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/galaxy/util/jstree.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1
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1 from __future__ import print_function
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2
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3 import copy
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4 import os
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5 from collections import namedtuple
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6
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7 import dictobj
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8
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9 Path = namedtuple('Path', ('path', 'id', 'options'))
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10
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11
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12 class Node(dictobj.DictionaryObject):
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13 """
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14 Copyright 2012 "Grim Apps"
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15
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16 Licensed under the Apache License, Version 2.0 (the "License");
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17 you may not use this file except in compliance with the License.
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18 You may obtain a copy of the License at
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19
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20 http://www.apache.org/licenses/LICENSE-2.0
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21
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22 Unless required by applicable law or agreed to in writing, software
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23 distributed under the License is distributed on an "AS IS" BASIS,
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24 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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25 See the License for the specific language governing permissions and
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26 limitations under the License.
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27
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28 Helper class written by William Grim - grimwm
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29 Original repo: https://github.com/grimwm/py-jstree
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30 Code adjusted according to the idea of Frank Blechschmidt - FraBle
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31 Thank you!
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32 ************************
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33 This class exists as a helper to the JSTree. Its "jsonData" method can
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34 generate sub-tree JSON without putting the logic directly into the JSTree.
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35
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36 This data structure is only semi-immutable. The JSTree uses a directly
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37 iterative (i.e. no stack is managed) builder pattern to construct a
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38 tree out of paths. Therefore, the children are not known in advance, and
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39 we have to keep the children attribute mutable.
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40 """
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41
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42 def __init__(self, path, oid, **kwargs):
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43 """
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44 kwargs allows users to pass arbitrary information into a Node that
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45 will later be output in jsonData(). It allows for more advanced
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46 configuration than the default path handling that JSTree currently allows.
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47 For example, users may want to pass "attr" or some other valid jsTree options.
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48
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49 Example:
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50 >>> node = Node('a', None)
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51 >>> assert node._items == {'text': 'a', 'children': dictobj.MutableDictionaryObject({})}
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52 >>> assert node.jsonData() == {'text': 'a'}
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53
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54 >>> node = Node('a', 1)
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55 >>> assert node._items == {'text': 'a', 'children': dictobj.MutableDictionaryObject({}), 'li_attr': dictobj.DictionaryObject({'id': 1}), 'id': 1}
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56 >>> assert node.jsonData() == {'text': 'a', 'id': 1, 'li_attr': {'id': 1}}
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57
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58 >>> node = Node('a', 5, icon="folder", state = {'opened': True})
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59 >>> 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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60 >>> assert node.jsonData() == {'text': 'a', 'state': {'opened': True}, 'id': 5, 'li_attr': {'id': 5}, 'icon': 'folder'}
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61 """
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62 super(Node, self).__init__()
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63
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64 children = kwargs.get('children', {})
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65 if len([key for key in children if not isinstance(children[key], Node)]):
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66 raise TypeError(
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67 "One or more children were not instances of '%s'" % Node.__name__)
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68 if 'children' in kwargs:
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69 del kwargs['children']
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70 self._items['children'] = dictobj.MutableDictionaryObject(children)
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71
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72 if oid is not None:
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73 li_attr = kwargs.get('li_attr', {})
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74 li_attr['id'] = oid
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75 kwargs['li_attr'] = li_attr
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76 self._items['id'] = oid
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77
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78 self._items.update(dictobj.DictionaryObject(**kwargs))
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79 self._items['text'] = path
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80
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81 def jsonData(self):
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82 children = [self.children[k].jsonData() for k in sorted(self.children)]
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83 output = {}
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84 for k in self._items:
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85 if 'children' == k:
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86 continue
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87 if isinstance(self._items[k], dictobj.DictionaryObject):
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88 output[k] = self._items[k].asdict()
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89 else:
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90 output[k] = self._items[k]
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91 if len(children):
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92 output['children'] = children
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93 return output
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94
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95
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96 class JSTree(dictobj.DictionaryObject):
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97 """
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98 An immutable dictionary-like object that converts a list of "paths"
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99 into a tree structure suitable for jQuery's jsTree.
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100 """
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101
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102 def __init__(self, paths, **kwargs):
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103 """
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104 Take a list of paths and put them into a tree. Paths with the same prefix should
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105 be at the same level in the tree.
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106
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107 kwargs may be standard jsTree options used at all levels in the tree. These will be outputted
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108 in the JSON.
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109
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110 """
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111 if len([p for p in paths if not isinstance(p, Path)]):
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112 raise TypeError(
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113 "All paths must be instances of '%s'" % Path.__name__)
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114
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115 super(JSTree, self).__init__()
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116
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117 root = Node('', None, **kwargs)
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118 for path in sorted(paths):
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119 curr = root
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120 subpaths = path.path.split(os.path.sep)
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121 for i, subpath in enumerate(subpaths):
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122 if subpath not in curr.children:
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123 opt = copy.deepcopy(kwargs)
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124 if len(subpaths) - 1 == i:
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125 oid = path.id
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126 opt.update(path.options) if path.options is not None else None
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127 else:
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128 oid = None
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129 curr.children[subpath] = Node(subpath, oid, **opt)
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130 # oid = path.id if len(subpaths) - 1 == i else None
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131 # curr.children[subpath] = Node(subpath, oid, **kwargs)
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132 curr = curr.children[subpath]
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133 self._items['_root'] = root
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134
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135 def pretty(self, root=None, depth=0, spacing=2):
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136 """
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137 Create a "pretty print" represenation of the tree with customized indentation at each
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138 level of the tree.
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139 """
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140 if root is None:
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141 root = self._root
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142 fmt = "%s%s/" if root.children else "%s%s"
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143 s = fmt % (" " * depth * spacing, root.text)
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144 for child in root.children:
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145 child = root.children[child]
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146 s += "\n%s" % self.pretty(child, depth + 1, spacing)
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147 return s
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148
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149 def jsonData(self):
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150 """
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151 Returns a copy of the internal tree in a JSON-friendly format,
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152 ready for consumption by jsTree. The data is represented as a
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153 list of dictionaries, each of which are our internal nodes.
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154
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155 """
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156 return [self._root.children[k].jsonData() for k in sorted(self._root.children)]