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model.py
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model.py
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"""Qt models
Description:
The model contains the original objects from Pyblish, such as
pyblish.api.Instance and pyblish.api.Plugin. The model then
provides an interface for reading and writing to those.
GUI data:
Aside from original data, such as pyblish.api.Plugin.optional,
the GUI also hosts data internal to itself, such as whether or
not an item has processed such that it may be colored appropriately
in the view. This data is prefixed with two underscores (__).
E.g.
_has_processed
This is so that the the GUI-only data doesn't accidentally overwrite
or cause confusion with existing data in plug-ins and instances.
Roles:
Data is accessed via standard Qt "roles". You can think of a role
as the key of a dictionary, except they can only be integers.
"""
from __future__ import unicode_literals
import logging
from . import settings
from .awesome import tags as awesome
from .vendor.Qt import QtCore, __binding__
from .vendor.six import text_type
# GENERAL
# The original object; Instance or Plugin
Object = QtCore.Qt.UserRole + 0
# Additional data (metadata) about an item
# In the case of instances, this is their data as-is.
# For anyhting else, this is statistics, such as running-time.
Data = QtCore.Qt.UserRole + 16
# The internal .id of any item
Id = QtCore.Qt.UserRole + 1
Type = QtCore.Qt.UserRole + 10
# The display name of an item
Label = QtCore.Qt.DisplayRole + 0
Families = QtCore.Qt.DisplayRole + 1
Icon = QtCore.Qt.DisplayRole + 13
# The item has not been used
IsIdle = QtCore.Qt.UserRole + 2
IsChecked = QtCore.Qt.UserRole + 3
IsOptional = QtCore.Qt.UserRole + 4
IsProcessing = QtCore.Qt.UserRole + 5
HasFailed = QtCore.Qt.UserRole + 6
HasSucceeded = QtCore.Qt.UserRole + 7
HasProcessed = QtCore.Qt.UserRole + 8
HasWarning = QtCore.Qt.UserRole + 62
Duration = QtCore.Qt.UserRole + 11
# PLUGINS
# Available and context-sensitive actions
Actions = QtCore.Qt.UserRole + 9
ActionIconVisible = QtCore.Qt.UserRole + 13
ActionIdle = QtCore.Qt.UserRole + 15
ActionFailed = QtCore.Qt.UserRole + 17
Docstring = QtCore.Qt.UserRole + 12
# LOG RECORDS
LogThreadName = QtCore.Qt.UserRole + 50
LogName = QtCore.Qt.UserRole + 51
LogFilename = QtCore.Qt.UserRole + 52
LogPath = QtCore.Qt.UserRole + 53
LogLineNumber = QtCore.Qt.UserRole + 54
LogMessage = QtCore.Qt.UserRole + 55
LogMilliseconds = QtCore.Qt.UserRole + 56
LogLevel = QtCore.Qt.UserRole + 61
# EXCEPTIONS
ExcFname = QtCore.Qt.UserRole + 57
ExcLineNumber = QtCore.Qt.UserRole + 58
ExcFunc = QtCore.Qt.UserRole + 59
ExcExc = QtCore.Qt.UserRole + 60
class Abstract(QtCore.QAbstractListModel):
def __iter__(self):
"""Yield each row of model"""
for index in range(len(self.items)):
yield self.createIndex(index, 0)
def data(self, index, role):
if role == Object:
return self.items[index.row()]
def append(self, item):
"""Append item to end of model"""
self.beginInsertRows(QtCore.QModelIndex(),
self.rowCount(),
self.rowCount())
self.items.append(item)
self.endInsertRows()
def rowCount(self, parent=None):
return len(self.items)
def reset(self):
self.beginResetModel()
self.items[:] = []
self.endResetModel()
def update_with_result(self, result):
pass
class Item(Abstract):
def __init__(self, parent=None):
super(Item, self).__init__(parent)
self.items = list()
self.checkstate = {}
# Common schema
self.schema = {
Label: "label",
Families: "families",
Id: "id",
Actions: "actions",
IsOptional: "optional",
Icon: "icon",
# GUI-only data
Type: "_type",
Duration: "_duration",
IsIdle: "_is_idle",
IsProcessing: "_is_processing",
HasProcessed: "_has_processed",
HasSucceeded: "_has_succeeded",
HasFailed: "_has_failed",
}
def store_checkstate(self):
self.checkstate.clear()
for index in self:
label = index.data(Label)
families = index.data(Families)
uid = "{families}.{label}".format(**locals())
state = index.data(IsChecked)
self.checkstate[uid] = state
def restore_checkstate(self):
for index in self:
label = index.data(Label)
families = index.data(Families)
# Does it have a previous state?
for uid, state in self.checkstate.items():
if uid == "{families}.{label}".format(**locals()):
self.setData(index, state, IsChecked)
break
class Plugin(Item):
def __init__(self):
super(Plugin, self).__init__()
self.schema.update({
IsChecked: "active",
Docstring: "__doc__",
ActionIdle: "_action_idle",
ActionFailed: "_action_failed",
HasWarning: "_has_warning",
})
def append(self, item):
item.label = item.label or item.__name__
# Use class names if settings say so.
if not settings.UseLabel:
item.label = item.__name__
# GUI-only data
item._is_idle = True
item._is_processing = False
item._has_processed = False
item._has_succeeded = False
item._has_failed = False
item._has_warning = False
item._type = "plugin"
item._action_idle = True
item._action_processing = False
item._action_succeeded = False
item._action_failed = False
return super(Plugin, self).append(item)
def data(self, index, role):
item = self.items[index.row()]
if role == Data:
return {}
if role == Icon:
return awesome.get(getattr(item, "icon", ""))
if role == ActionIconVisible:
# Can only run actions on active plug-ins.
if not item.active:
return
actions = list(item.actions)
# Context specific actions
for action in actions:
if action.on == "all":
return True
if action.on == "failed" and item._has_failed:
return True
if action.on == "warning" and item._has_warning:
return True
if action.on == "failedOrWarning" and (item._has_failed or item._has_warning):
return True
if action.on == "succeeded" and item._has_succeeded:
return True
if action.on == "processed" and item._has_processed:
return True
if action.on == "notProcessed" and not item._has_processed:
return True
return False
if role == Actions:
# Can only run actions on active plug-ins.
if not item.active:
return
actions = list(item.actions)
# Context specific actions
for action in actions[:]:
if action.on == "failed" and not item._has_failed:
actions.remove(action)
if action.on == "warning" and not item._has_warning:
actions.remove(action)
if action.on == "failedOrWarning" and not (item._has_failed or item._has_warning):
actions.remove(action)
if action.on == "succeeded" and not item._has_succeeded:
actions.remove(action)
if action.on == "processed" and not item._has_processed:
actions.remove(action)
if action.on == "notProcessed" and item._has_processed:
actions.remove(action)
# Discard empty groups
i = 0
try:
action = actions[i]
except IndexError:
pass
else:
while action:
try:
action = actions[i]
except IndexError:
break
isempty = False
if action.__type__ == "category":
try:
next_ = actions[i + 1]
if next_.__type__ != "action":
isempty = True
except IndexError:
isempty = True
if isempty:
actions.pop(i)
i += 1
return actions
key = self.schema.get(role)
value = getattr(item, key, None) if key is not None else None
if value is None:
value = super(Plugin, self).data(index, role)
return value
def setData(self, index, value, role):
item = self.items[index.row()]
key = self.schema.get(role)
if key is None:
return
setattr(item, key, value)
if __binding__ in ("PyQt4", "PySide"):
self.dataChanged.emit(index, index)
else:
self.dataChanged.emit(index, index, [role])
def update_with_result(self, result, action=False):
item = result["plugin"]
index = self.items.index(item)
index = self.createIndex(index, 0)
hasWarning = self.data(index, HasWarning)
if not hasWarning:
hasWarning = any([record.levelno == logging.WARNING for record in result["records"]])
self.setData(index, False, IsIdle)
self.setData(index, False, IsProcessing)
self.setData(index, hasWarning, HasWarning)
self.setData(index, True, HasProcessed)
self.setData(index, result["success"], HasSucceeded)
# Once failed, never go back.
if not self.data(index, HasFailed):
self.setData(index, not result["success"], HasFailed)
super(Plugin, self).update_with_result(result)
class Instance(Item):
def __init__(self):
super(Instance, self).__init__()
self.ids = []
self.schema.update({
IsChecked: "publish",
# Merge copy of both family and families data members
Families: "__families__",
})
def append(self, item):
item.data["optional"] = item.data.get("optional", True)
item.data["publish"] = item.data.get("publish", True)
item.data["label"] = item.data.get("label", item.data["name"])
# Use instance name if settings say so.
if not settings.UseLabel:
item.data["label"] = item.data["name"]
# Store instances id in easy access data member
self.ids.append(item.id)
# GUI-only data
item.data["_type"] = "instance"
item.data["_has_succeeded"] = False
item.data["_has_failed"] = False
item.data["_is_idle"] = True
# Merge `family` and `families` for backwards compatibility
item.data["__families__"] = ([item.data["family"]] +
item.data.get("families", []))
return super(Instance, self).append(item)
def data(self, index, role):
item = self.items[index.row()]
if role == Data:
return item.data
if role == Icon:
return awesome.get(item.data.get("icon"))
key = self.schema.get(role)
value = item.data.get(key) if key is not None else None
if value is None:
value = super(Instance, self).data(index, role)
return value
def setData(self, index, value, role):
item = self.items[index.row()]
key = self.schema.get(role)
if key is None:
return
item.data[key] = value
if __binding__ in ("PyQt4", "PySide"):
self.dataChanged.emit(index, index)
else:
self.dataChanged.emit(index, index, [role])
def update_with_result(self, result):
item = result["instance"]
if item is None:
return
index = self.items.index(item)
index = self.createIndex(index, 0)
self.setData(index, False, IsIdle)
self.setData(index, False, IsProcessing)
self.setData(index, True, HasProcessed)
self.setData(index, result["success"], HasSucceeded)
# Once failed, never go back.
if not self.data(index, HasFailed):
self.setData(index, not result["success"], HasFailed)
super(Instance, self).update_with_result(result)
class Terminal(Abstract):
def __init__(self, parent=None):
super(Terminal, self).__init__(parent)
self.items = list()
# Common schema
self.schema = {
Type: "type",
Label: "label",
# Records
LogThreadName: "threadName",
LogName: "name",
LogFilename: "filename",
LogPath: "pathname",
LogLineNumber: "lineno",
LogMessage: "msg",
LogMilliseconds: "msecs",
LogLevel: "levelname",
# Exceptions
ExcFname: "fname",
ExcLineNumber: "line_number",
ExcFunc: "func",
ExcExc: "exc",
}
def data(self, index, role):
item = self.items[index.row()]
if role == Data:
return item
key = self.schema.get(role)
if not key:
return
value = item.get(key)
if value is None:
value = super(Terminal, self).data(index, role)
return value
def setData(self, index, value, role):
item = self.items[index.row()]
key = self.schema.get(role)
if key is None:
return
item[key] = value
if __binding__ in ("PyQt4", "PySide"):
self.dataChanged.emit(index, index)
else:
self.dataChanged.emit(index, index, [role])
def update_with_result(self, result):
for record in result["records"]:
if record.levelno < settings.TerminalLoglevel:
continue
self.append({
"label": text_type(record.msg) % record.args,
"type": "record",
# Native
"threadName": record.threadName,
"name": record.name,
"filename": record.filename,
"pathname": record.pathname,
"lineno": record.lineno,
"msg": record.msg,
"msecs": record.msecs,
"levelname": record.levelname,
})
error = result["error"]
if error is not None:
fname, line_no, func, exc = error.traceback
self.append({
"label": text_type(error),
"type": "error",
"fname": fname,
"line_number": line_no,
"func": func,
"exc": exc,
})
class ProxyModel(QtCore.QSortFilterProxyModel):
"""A QSortFilterProxyModel with custom exclude and include rules
Role may be either an integer or string, and each
role may include multiple values.
Example:
>>> # Exclude any item whose role 123 equals "Abc"
>>> model = ProxyModel(None)
>>> model.add_exclusion(role=123, value="Abc")
>>> # Exclude multiple values
>>> model.add_exclusion(role="name", value="Pontus")
>>> model.add_exclusion(role="name", value="Richard")
>>> # Exclude amongst includes
>>> model.add_inclusion(role="type", value="PluginItem")
>>> model.add_exclusion(role="name", value="Richard")
"""
def __init__(self, source, parent=None):
super(ProxyModel, self).__init__(parent)
self.setSourceModel(source)
self.excludes = dict()
self.includes = {'families': ['*']}
def item(self, index):
index = self.index(index, 0, QtCore.QModelIndex())
index = self.mapToSource(index)
model = self.sourceModel()
return model.items[index.row()]
def reset(self):
self.beginResetModel()
self.includes = {'families': ['*']}
self.endResetModel()
def add_exclusion(self, role, value):
"""Exclude item if `role` equals `value`
Attributes:
role (int, string): Qt role or name to compare `value` to
value (object): Value to exclude
"""
self._add_rule(self.excludes, role, value)
def remove_exclusion(self, role, value=None):
"""Remove exclusion rule
Arguments:
role (int, string): Qt role or name to remove
value (object, optional): Value to remove. If none
is supplied, the entire role will be removed.
"""
self._remove_rule(self.excludes, role, value)
def set_exclusion(self, rules):
"""Set excludes
Replaces existing excludes with those in `rules`
Arguments:
rules (list): Tuples of (role, value)
"""
self._set_rules(self.excludes, rules)
def clear_exclusion(self):
self._clear_group(self.excludes)
def add_inclusion(self, role, value):
"""Include item if `role` equals `value`
Attributes:
role (int): Qt role to compare `value` to
value (object): Value to exclude
"""
self._add_rule(self.includes, role, value)
def remove_inclusion(self, role, value=None):
"""Remove exclusion rule"""
self._remove_rule(self.includes, role, value)
def set_inclusion(self, rules):
self._set_rules(self.includes, rules)
def clear_inclusion(self):
self._clear_group(self.includes)
def _add_rule(self, group, role, value):
"""Implementation detail"""
if role not in group:
group[role] = list()
group[role].append(value)
self.invalidate()
def _remove_rule(self, group, role, value=None):
"""Implementation detail"""
if role not in group:
return
if value is None:
group.pop(role, None)
else:
group[role].remove(value)
self.invalidate()
def _set_rules(self, group, rules):
"""Implementation detail"""
group.clear()
for rule in rules:
self._add_rule(group, *rule)
self.invalidate()
def _clear_group(self, group):
group.clear()
self.invalidate()
# Overridden methods
def filterAcceptsRow(self, source_row, source_parent):
"""Exclude items in `self.excludes`"""
model = self.sourceModel()
item = model.items[source_row]
key = getattr(item, "filter", None)
if key is not None:
regex = self.filterRegExp()
if regex.pattern():
match = regex.indexIn(key)
return False if match == -1 else True
# --- Check if any family assigned to the plugin is in allowed families
for role, values in self.includes.items():
includes_list = [([x] if isinstance(x, (list, tuple)) else x)
for x in getattr(item, role, None)]
return any(include in values for include in includes_list)
for role, values in self.excludes.items():
data = getattr(item, role, None)
if data in values:
return False
return super(ProxyModel, self).filterAcceptsRow(
source_row, source_parent)
def rowCount(self, parent=QtCore.QModelIndex()):
return super(ProxyModel, self).rowCount(parent)