348 lines
13 KiB
Python
348 lines
13 KiB
Python
from PyQt5.QtCore import QAbstractItemModel, QModelIndex, Qt
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from PyQt5.QtGui import QIcon
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from PyQt5.QtWidgets import QTreeWidgetItem
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from enum import Enum
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from file_handler import ItemDescriptor, NodeType
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column_names = ['Name', 'Type', 'Value', 'Description', 'ID',]
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class TreeType(Enum):
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Full = "full view"
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Metadata = "metadata view"
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Data = "data view"
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class NixTreeItem(QTreeWidgetItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(parent)
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self._node_descriptor = node_descriptor
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self._file_handler = file_handler
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self._parent_item = parent
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self._child_items = []
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self._is_loaded = False
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@property
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def node_descriptor(self):
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return self._node_descriptor
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@property
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def entity_type(self):
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return self._node_descriptor.entity_type
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def child(self, row):
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if row < len(self._child_items):
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return self._child_items[row]
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return None
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def childCount(self):
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n = 0 if self._is_loaded else 1
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return max(n, len(self._child_items))
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def columnCount(self):
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return len(column_names)
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def data(self, column):
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if column == 0:
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return self._node_descriptor.name
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elif column == 1:
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return self._node_descriptor.type
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elif column == 2:
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return self._node_descriptor.value
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elif column == 3:
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return self._node_descriptor.definition
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elif column == 4:
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return self._node_descriptor.id
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else:
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return None
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def parent(self):
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return self._parent_item
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def row(self):
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if self._parent_item:
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return self._parent_item._child_items.index(self)
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return 0
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class FileTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(node_descriptor, file_handler=file_handler, parent=parent)
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self._is_loaded = False
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def load_children(self):
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self._child_items = []
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sections, _ = self._file_handler.request_metadata()
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for s in sections:
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self._child_items.append(SectionTreeItem(s, self._file_handler, parent=self))
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blocks = self._file_handler.request_blocks()
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for b in blocks:
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self._child_items.append(BlockTreeItem(b, self._file_handler, parent=self))
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self._is_loaded = True
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class DataTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(node_descriptor, file_handler=file_handler, parent=parent)
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self._is_loaded = False
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def load_children(self):
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self._child_items = []
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blocks = self._file_handler.request_blocks()
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for b in blocks:
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self._child_items.append(BlockTreeItem(b, self._file_handler, parent=self))
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self._is_loaded = True
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class MetadataTreeItem(NixTreeItem):
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"""
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Root item for a metadata tree.
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Args:
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"""
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def __init__(self, node_descriptor, file_handler, parent=None, root_section_id=None):
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super().__init__(node_descriptor, file_handler=file_handler, parent=parent)
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self._root_section_id = root_section_id
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self._is_loaded = False
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def load_children(self):
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self._child_items = []
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if self._root_section_id is not None:
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item = self._file_handler.request_section_descriptor(self._root_section_id)
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if item is not None:
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self._child_items.append(SectionTreeItem(item, self._file_handler, parent=self))
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else:
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sections, _ = self._file_handler.request_metadata(root_id=self._root_section_id)
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for s in sections:
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self._child_items.append(SectionTreeItem(s, self._file_handler, parent=self))
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self._is_loaded = True
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class BlockTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(node_descriptor, file_handler, parent=parent)
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self._is_loaded = False
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def load_children(self):
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self._child_items = []
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arrays = self._file_handler.request_data_arrays(self._node_descriptor.id)
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for a in arrays:
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self._child_items.append(DataArrayTreeItem(a, self._file_handler, parent=self))
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for t in self._file_handler.request_tags(self._node_descriptor.id):
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self._child_items.append(TagTreeItem(t, self._file_handler, parent=self))
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data_frames = self._file_handler.request_data_frames(self._node_descriptor.id)
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for df in data_frames:
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self._child_items.append(DataFrameTreeItem(df, self._file_handler, parent=self))
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sources = self._file_handler.request_sources(self._node_descriptor.id)
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for s in sources:
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self._child_items.append(SourceTreeItem(s, self._file_handler, parent=self))
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self._is_loaded = True
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class SourceTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent):
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super().__init__(node_descriptor, file_handler, parent=parent)
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self._is_loaded = False
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def load_children(self):
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sources = self._file_handler.request_sources(self._node_descriptor.block_id, self._node_descriptor.id)
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for s in sources:
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self._child_items.append(SourceTreeItem(s, self._file_handler, parent=self))
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self._is_loaded = True
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class GroupTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent):
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super().__init__(node_descriptor, file_handler, parent=parent)
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self._is_loaded = False
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def load_children(self):
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self._child_items = []
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arrays = self._file_handler.request_data_arrays(self._node_descriptor.id)
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for a in arrays:
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self._child_items.append(DataArrayTreeItem(a, self._file_handler, parent=self))
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for t in self._file_handler.request_tags(self._node_descriptor.id):
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self._child_items.append(TagTreeItem(t, self._file_handler, parent=self))
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data_frames = self._file_handler.request_data_frames(self._node_descriptor.id)
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for df in data_frames:
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self._child_items.append(DataFrameTreeItem(df, self._file_handler, parent=self))
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sources = self._file_handler.request_sources(self._node_descriptor.id)
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for s in sources:
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self._child_items.append(SourceTreeItem(s, self._file_handler, parent=self))
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self._is_loaded = True
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class DataFrameTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(node_descriptor, file_handler, parent=parent)
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self._is_loaded = True
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class FeatureTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(node_descriptor, file_handler, parent=parent)
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self._is_loaded = True
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class DataArrayTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(node_descriptor, file_handler, parent=parent)
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self._is_loaded = False
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def load_children(self):
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self._child_items = []
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dimensions = self._file_handler.request_dimensions(self._node_descriptor.block_id, self._node_descriptor.id)
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for d in dimensions:
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self._child_items.append(DimensionTreeItem(d, self._file_handler, parent=self))
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self._is_loaded = True
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class DimensionTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(node_descriptor, file_handler, parent=parent)
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self._is_loaded = True
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class SectionTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(node_descriptor, file_handler=file_handler, parent=parent)
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self._is_loaded = False
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def load_children(self):
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self._child_items = []
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sections, properties = self._file_handler.request_metadata(self._node_descriptor.id)
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for s in sections:
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self._child_items.append(SectionTreeItem(s, self._file_handler, parent=self))
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for p in properties:
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self._child_items.append(PropertyTreeItem(p, self._file_handler, parent=self))
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self._is_loaded = True
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class PropertyTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(node_descriptor, file_handler, parent=parent)
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self._is_loaded = True
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def childCount(self):
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return 0
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class TagTreeItem(NixTreeItem):
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def __init__(self, node_descriptor, file_handler, parent=None):
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super().__init__(node_descriptor, file_handler, parent=parent)
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self._is_loaded = False
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def load_children(self):
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self._child_items = []
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references = self._file_handler.request_references(self._node_descriptor.block_id, self._node_descriptor.id, self._node_descriptor.entity_type == NodeType.MultiTag)
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for r in references:
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self._child_items.append(DataArrayTreeItem(r, self._file_handler, self))
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features = self._file_handler.request_features(self._node_descriptor.block_id, self._node_descriptor.id, self._node_descriptor.entity_type == NodeType.MultiTag)
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for f in features:
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self._child_items.append(FeatureTreeItem(f, self._file_handler, self))
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self._is_loaded = True
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class TreeModel(QAbstractItemModel):
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def __init__(self, file_handler, tree_type=TreeType.Full, parent=None, root_section_id=None):
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super(TreeModel, self).__init__(parent)
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nd = ItemDescriptor(file_handler.filename, type="Root item")
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self.type_icons = {NodeType.Block: QIcon("./icons/nix_block_1d.png"),
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NodeType.Source: QIcon("./icons/nix_source.png"),
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NodeType.DataArray: QIcon("./icons/nix_data_array.png"),
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NodeType.Dimension: QIcon("./icons/nix_dimension.png"),
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NodeType.DataFrame: QIcon("./icons/nix_data_frame.png"),
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NodeType.Section: QIcon("./icons/nix_section.png"),
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NodeType.Property: QIcon("./icons/nix_property.png"),
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NodeType.Tag: QIcon("./icons/nix_tag.png"),
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NodeType.MultiTag: QIcon("./icons/nix_tag.png"),
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NodeType.Group: QIcon("./icons/nix_group.png"),
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NodeType.Feature: QIcon("./icons/nix_feature.png")}
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if tree_type == TreeType.Full:
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self.root_item = FileTreeItem(nd, file_handler, parent=None)
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elif tree_type == TreeType.Metadata:
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self.root_item = MetadataTreeItem(nd, file_handler, parent=None, root_section_id=root_section_id)
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else:
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self.root_item = DataTreeItem(nd, file_handler, parent=None)
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self.root_item.load_children()
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def columnCount(self, parent):
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return len(column_names)
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def data(self, index, role):
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if not index.isValid():
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return None
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item = index.internalPointer()
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if role == Qt.DisplayRole:
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return item.data(index.column())
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elif role == Qt.DecorationRole and index.column() == 0:
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if item.entity_type in self.type_icons.keys():
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return self.type_icons[item.entity_type]
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else:
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return None
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else:
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return None
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def canFetchMore(self, index):
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if not index.isValid():
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return False
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item = index.internalPointer()
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return not item._is_loaded
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def fetchMore(self, index):
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item = index.internalPointer()
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item.load_children()
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def flags(self, index):
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if not index.isValid():
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return Qt.NoItemFlags
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return Qt.ItemIsEnabled | Qt.ItemIsUserCheckable
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def headerData(self, section, orientation, role):
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if orientation == Qt.Horizontal and role == Qt.DisplayRole:
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return column_names[section]
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return None
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def index(self, row, column, parent_index):
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idx = QModelIndex()
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if not self.hasIndex(row, column, parent_index):
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return idx
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if not parent_index.isValid():
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parentItem = self.root_item
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else:
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parentItem = parent_index.internalPointer()
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childItem = parentItem.child(row)
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if childItem:
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idx = self.createIndex(row, column, childItem)
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return idx
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def parent(self, child_index):
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if not child_index.isValid():
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return QModelIndex()
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child_item = child_index.internalPointer()
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parent_item = child_item.parent()
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if parent_item is None:
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return QModelIndex()
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# return self.createIndex(0, 0, self.root_item)
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return self.createIndex(parent_item.row(), 0, parent_item)
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def rowCount(self, parent_index):
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if parent_index.column() > 0:
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return 0
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if not parent_index.isValid():
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parentItem = self.root_item
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else:
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parentItem = parent_index.internalPointer()
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return parentItem.childCount()
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