sface/rspecwindow.py

   1 import os
   2 import sys
   3
   4 from PyQt4.QtCore import *
   5 from PyQt4.QtGui import *
   6 from PyQt4.QtXml import *
   7
   8 from sface.config import config
   9 from sface.screens.sfascreen import SfaScreen
  10
  11
  12 class RSpecView(QTreeView):
  13     def __init__(self, parent):
  14         QTreeView.__init__(self, parent)
  15
  16         self.setAnimated(True)
  17         self.setItemsExpandable(True)
  18         self.setRootIsDecorated(True)
  19         self.setHeaderHidden(True)
  20         self.setAttribute(Qt.WA_MacShowFocusRect, 0)
  21         self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
  22
  23     def expandMatchingText(self, txt):
  24         self.collapseAll()
  25         self.expandToDepth(0)
  26
  27         model = self.model()
  28
  29         def recursiveExpand(index):
  30             parent = index.parent()
  31             if parent and parent.isValid():
  32                 recursiveExpand(parent)
  33             self.expand(index)
  34
  35         def search(index):
  36             if index.data().toString() == txt:
  37                 recursiveExpand(index)
  38                 self.scrollTo(index, self.PositionAtCenter)
  39                 return
  40
  41             rows = model.rowCount(index)
  42             for r in range(rows):
  43                 child_index = index.child(r, 0)
  44                 search(child_index)
  45
  46         root_rows = model.rowCount()
  47         for r in range(root_rows):
  48             index = model.index(r, 0)
  49             search(index)
  50
  51
  52 class DomModel(QAbstractItemModel):
  53     def __init__(self, document, parent = 0):
  54         QAbstractItemModel.__init__(self, parent)
  55         self.domDocument = document
  56         # one of the children of the rootItem is the 'xml' thing.
  57         # here I delete it.
  58         childList = document.childNodes()
  59         for i in range(childList.count()):
  60             currElem = childList.item(i)
  61             if (currElem.nodeType() == QDomNode.ProcessingInstructionNode):
  62                 document.removeChild(currElem)
  63                 break
  64         self.rootItem = DomItem(document, 0);
  65
  66     def data(self, index, role):
  67         if not index.isValid():
  68             return QVariant()
  69         if role != Qt.DisplayRole:
  70             return QVariant()
  71         node = index.internalPointer().node()
  72         attributeMap = node.attributes()
  73
  74         col = index.column()
  75         if col == 0:
  76             if node.nodeType() == QDomNode.ElementNode:
  77                 qslist = QStringList()
  78                 for i in range(attributeMap.count()):
  79                     attr = attributeMap.item(i)
  80                     elem = '%s="%s"' % (attr.nodeName(), attr.nodeValue())
  81                     qslist.append(elem)
  82                 return QString("<%s %s>" % (node.nodeName(), qslist.join(' ')))
  83             elif node.nodeType() == QDomNode.AttributeNode:
  84                 return QString('Whozat?!')
  85             elif node.nodeType() == QDomNode.TextNode:
  86                 return node.nodeValue()
  87             elif node.nodeType() == QDomNode.CDATASectionNode:
  88                 return QString('unsupported node type')
  89             elif node.nodeType() == QDomNode.EntityReferenceNode:
  90                 return QString('unsupported node type')
  91             elif node.nodeType() == QDomNode.EntityNode:
  92                 return QString('unsupported node type')
  93             elif node.nodeType() == QDomNode.ProcessingInstructionNode:
  94                 return QVariant()
  95                 #return node.nodeName()
  96             elif node.nodeType() == QDomNode.CommentNode:
  97                 return QString('#').append(node.nodeValue())
  98             elif node.nodeType() == QDomNode.DocumentNode:
  99                 return QString('unsupported node type')
 100             elif node.nodeType() == QDomNode.DocumentTypeNode:
 101                 return QString('unsupported node type')
 102             elif node.nodeType() == QDomNode.DocumentFragmentNode:
 103                 return QString('unsupported node type')
 104             elif node.nodeType() == QDomNode.NotationNode:
 105                 return QString('unsupported node type')
 106             elif node.nodeType() == QDomNode.BaseNode:
 107                 return QString('unsupported node type')
 108             elif node.nodeType() == QDomNode.CharacterDataNode:
 109                 return QString('unsupported node type')
 110             else:
 111                 return QVariant()
 112         else:
 113             return QVariant()
 114
 115     def flags(self, index):
 116         if not index.isValid():
 117             return Qt.ItemIsEnabled
 118         return Qt.ItemIsEnabled | Qt.ItemIsSelectable
 119
 120     def headerData(self, section, orientation, role):
 121         return QVariant()
 122
 123     def index(self, row, column, parent=None):
 124         if not parent or not parent.isValid():
 125             parentItem = self.rootItem
 126         else:
 127             parentItem = parent.internalPointer()
 128
 129         childItem = parentItem.child(row)
 130         # childItem would be None to say "false"?
 131         if childItem:
 132             return self.createIndex(row, column, childItem)
 133         else:
 134             return QModelIndex()
 135
 136     def parent(self, child):
 137         if not child.isValid():
 138             return QModelIndex()
 139         childItem = child.internalPointer()
 140         parentItem = childItem.parent()
 141
 142         if not parentItem or parentItem == self.rootItem:
 143             return QModelIndex()
 144         return self.createIndex(parentItem.row(), 0, parentItem)
 145
 146     def rowCount(self, parent=None):
 147         if not parent or not parent.isValid():
 148             parentItem = self.rootItem
 149         else:
 150             parentItem = parent.internalPointer()
 151
 152         return parentItem.node().childNodes().count()
 153
 154     def columnCount(self, parent):
 155         # just one column we'll print tag name (and attributes) or the
 156         # tag content
 157         return 1
 158
 159
 160 class DomItem:
 161     # wrapper around PyQt4.QtXml.QDomNode it keeps an hash of
 162     # childrens for performance reasons
 163
 164     def __init__(self, node, row, parent = 0):
 165         # node is of type PyQt4.QtXml.QDomNode
 166         self.domNode = node
 167         self.parentItem = parent
 168         self.rowNumber = row
 169         self.childItems = {}
 170
 171     def child(self, i):
 172         if i in self.childItems:
 173             return self.childItems[i]
 174         if i >= 0 and i < self.domNode.childNodes().count():
 175             childNode = self.domNode.childNodes().item(i)
 176             childItem = DomItem(childNode, i, self)
 177             self.childItems[i] = childItem
 178             return childItem
 179         return None
 180
 181     def parent(self):
 182         return self.parentItem
 183
 184     def node(self):
 185         return self.domNode
 186
 187     def row(self):
 188         return self.rowNumber
 189
 190
 191 class RSpecWindow(QDialog):
 192     def __init__(self, parent=None):
 193         QDialog.__init__(self, parent)
 194         self.setWindowTitle("RSPec View")
 195
 196         self.document = None
 197         self.model = None
 198
 199         self.view = RSpecView(self)
 200         layout = QVBoxLayout()
 201         layout.addWidget(self.view)
 202         self.setLayout(layout)
 203
 204         self.updateView()
 205
 206     def show(self):
 207         self.updateView()
 208         QDialog.show(self)
 209
 210     def showNode(self, hostname):
 211         self.view.expandMatchingText(hostname)
 212
 213     def updateView(self):
 214         del self.document
 215         del self.model
 216         self.document = None
 217         self.model = None
 218
 219         rspec_file = config.getSliceRSpecFile()
 220         if not os.path.exists(rspec_file):
 221             return
 222
 223         self.document = QDomDocument("RSpec")
 224         self.document.setContent(open(rspec_file,'r').read())
 225         self.model = DomModel(self.document, self)
 226
 227         self.view.setModel(self.model)
 228         self.view.expand(self.model.index(0, 0)) #expand first level only
 229
 230