Music production session manager
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346 lines
15 KiB
346 lines
15 KiB
#! /usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Copyright 2020, Nils Hilbricht, Germany ( https://www.hilbricht.net )
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This file is part of the Laborejo Software Suite ( https://www.laborejo.org ).
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This application is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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import logging; logger = logging.getLogger(__name__); logger.info("import")
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#Standard Library
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#Third Party
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from PyQt5 import QtCore, QtGui, QtWidgets
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#Engine
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import engine.api as api
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#Qt
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from .helper import sizeof_fmt
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from .projectname import ProjectNameWidget
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from .projectname import NewSessionDialog
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class DirectoryItem(QtWidgets.QTreeWidgetItem):
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"""A plain directory with no session content"""
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def __lt__(self, other):
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"""Treeview uses only less than.
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less equal, both greater and equal are not used.
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We always want to be on top, no matter what column or sort order
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"""
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if type(other) is SessionItem:
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if self.treeWidget().header().sortIndicatorOrder(): #descending?
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return False
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else:
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return True
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else:
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return QtWidgets.QTreeWidgetItem.__lt__(self, other)
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class SessionItem(QtWidgets.QTreeWidgetItem):
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"""Subclass to enable sorting of size by actual value, not by human readable display.
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entry["nsmSessionName"] = projectName
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entry["name"] = os.path.basename(projectName)
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entry["lastSavedDate"] = "2016-05-21 16:36"
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entry["fullPath"] = actual path
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entry["sizeInBytes"] = 623623
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entry["numberOfClients"] = 3
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entry["hasSymlinks"] = True
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entry["parents"] = []
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"""
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allItems = {} #nsmSessionName : SessionItem
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def __init__(self, sessionDict):
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SessionItem.allItems[sessionDict["nsmSessionName"]] = self
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self.sessionDict = sessionDict
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symlinks = "Yes" if sessionDict["hasSymlinks"] else "No" #TODO: Translate
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parameterList = [sessionDict["name"], sessionDict["lastSavedDate"], str(sessionDict["numberOfClients"]), sizeof_fmt(sessionDict["sizeInBytes"]), symlinks, sessionDict["fullPath"], ]
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super().__init__(parameterList, type=1000) #type 0 is default qt type. 1000 is subclassed user type)
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self.setTextAlignment(2, QtCore.Qt.AlignHCenter) #clients
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self.setTextAlignment(4, QtCore.Qt.AlignHCenter) #symlinks
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self.setLocked(sessionDict["locked"])
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def updateData(self):
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"""Actively queries the api for new data"""
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sessionDict = api.sessionQuery(self.sessionDict["nsmSessionName"])
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self.sessionDict = sessionDict
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self.setText(0, sessionDict["name"])
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self.setText(1, sessionDict["lastSavedDate"])
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self.setText(2, str(sessionDict["numberOfClients"]))
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self.setText(3, sizeof_fmt(sessionDict["sizeInBytes"]))
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self.setText(4, "Yes" if sessionDict["hasSymlinks"] else "No") #TODO: Translate
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self.setText(5, sessionDict["fullPath"])
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def setLocked(self, state:bool):
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"""Number of clients, symlinks and size change frequently while a session is open/locked.
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We deactivate the display of these values while locked"""
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return
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if not state == self.isDisabled():
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self.setDisabled(state)
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if state:
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self.setText(2, "") #number of clients
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self.setText(3, "") #Symlinks
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self.setText(4, "") #Size
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else:
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self.updateData()
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def updateTimestamp(self, timestamp:str):
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#Column 1 "Last Save"
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self.setText(1, timestamp)
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def __lt__(self, other):
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"""Treeview uses only less than.
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less equal, both greater and equal are not used.
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There is no check between two directory-items here because these are standard WidgetItems
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"""
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if type(other) is DirectoryItem: #Just a dir
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return False #we are "greater"=later
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column = self.treeWidget().sortColumn()
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if column == 3: #bytes
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return self.sessionDict["sizeInBytes"] > other.sessionDict["sizeInBytes"]
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elif column == 2: #number of clients
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return self.sessionDict["numberOfClients"] > other.sessionDict["numberOfClients"]
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else:
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return QtWidgets.QTreeWidgetItem.__lt__(self, other)
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class SessionTreeController(object):
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"""Controls a treeWidget, but does not subclass"""
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def __init__(self, mainWindow):
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self.mainWindow = mainWindow
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self.treeWidget = mainWindow.ui.session_tree
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self._cachedSessionDicts = None
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self.mainWindow.ui.checkBoxNested.stateChanged.connect(self._reactSignal_nestedFlatChanged)
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self._reactSignal_nestedFlatChanged(self.mainWindow.ui.checkBoxNested.isChecked()) #initial state
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#Configure the treewidget
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#columns: name, path (relative from session dir), number of programs, disk size (links resolved?)
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self.treeWidget.setColumnCount(4)
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self.headerLabels = [
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QtCore.QCoreApplication.translate("SessionTree", "Name"),
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QtCore.QCoreApplication.translate("SessionTree", "Last Save"),
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QtCore.QCoreApplication.translate("SessionTree", "Clients"),
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QtCore.QCoreApplication.translate("SessionTree", "Size"),
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QtCore.QCoreApplication.translate("SessionTree", "Symlinks"),
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QtCore.QCoreApplication.translate("SessionTree", "Path"),
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]
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self.treeWidget.setHeaderLabels(self.headerLabels)
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self.treeWidget.setSortingEnabled(True)
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self.treeWidget.setAlternatingRowColors(True)
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self.treeWidget.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
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#TODO: save sorting in user-wide qt application settings
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#We remember sorting via signals layoutAboutToBeChanged and restore via layoutChanged
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self.sortByColumnValue = 0 #by name
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self.sortDescendingValue = 0 # Qt::SortOrder which is 0 for ascending and 1 for descending
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self.treeWidget.header().setSortIndicator(0,0) #Hack/Workaround. On startup it is not enough to set sorting. New items will be added in a random position. Maybe that is our async network adding.
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#self.treeWidget.sortByColumn(self.sortByColumnValue, self.sortDescendingValue)
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api.callbacks.sessionsChanged.append(self._reactCallback_sessionsChanged)
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api.callbacks.sessionLocked.append(self._reactCallback_sessionLocked)
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api.callbacks.sessionFileChanged.append(self._reactCallback_sessionFileChanged)
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self.treeWidget.itemDoubleClicked.connect(self._reactSignal_itemDoubleClicked)
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self.treeWidget.customContextMenuRequested.connect(self.contextMenu)
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self.treeWidget.model().layoutAboutToBeChanged.connect(self._reactSignal_rememberSorting)
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#self.treeWidget.model().layoutChanged.connect(self._reactSignal_restoreSorting)
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self.mainWindow.ui.button_new_session.clicked.connect(self._reactSignal_newSession)
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self.mainWindow.ui.button_load_selected_session.clicked.connect(self._reactSignal_openSelected)
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logger.info("Full View Session Chooser ready")
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def _reactCallback_sessionFileChanged(self, name:str, timestamp:str):
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"""Timestamp of "last saved" changed"""
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SessionItem.allItems[name].updateTimestamp(timestamp)
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def _reactCallback_sessionLocked(self, name:str, state:bool):
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SessionItem.allItems[name].setLocked(state)
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def _reactCallback_sessionsChanged(self, sessionDicts:list):
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"""Main callback for new, added, removed, moved sessions etc.
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We also get this for every client change so we can update our numbers"""
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self.treeWidget.clear()
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self._cachedSessionDicts = sessionDicts #in case we change the flat/nested mode.
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for sessionDict in sessionDicts:
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self.addSessionItem(sessionDict)
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for i in range(len(self.headerLabels)):
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self.treeWidget.resizeColumnToContents(i)
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#Make the name column a few pixels wider
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self.treeWidget.setColumnWidth(0, self.treeWidget.columnWidth(0) + 25)
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self.treeWidget.sortItems(self.sortByColumnValue, self.sortDescendingValue)
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def _addItemNested(self, sessionDict:dict):
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assert sessionDict, sessionDict
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item = SessionItem(sessionDict)
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if sessionDict["parents"]:
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#These are already a hirarchy, sorted from parents to children
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last = None #first is toplevel
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for parentDir in sessionDict["parents"]:
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alreadyExist = self.treeWidget.findItems(parentDir, QtCore.Qt.MatchExactly|QtCore.Qt.MatchRecursive, column=0)
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if alreadyExist:
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directoryItem = alreadyExist[0]
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else:
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directoryItem = DirectoryItem([parentDir])
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#directoryItem = QtWidgets.QTreeWidgetItem([parentDir], 0) #type 0 is qt default
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if last:
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last.addChild(directoryItem)
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else:
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self.treeWidget.addTopLevelItem(directoryItem)
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last = directoryItem
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#After the loop: All subdirs built. Now add the item to the last one
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last.addChild(item)
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else:
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self.treeWidget.addTopLevelItem(item)
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def _addItemFlat(self, sessionDict:dict):
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assert sessionDict, sessionDict
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sessionDict["name"] = sessionDict["nsmSessionName"]
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item = SessionItem(sessionDict)
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self.treeWidget.addTopLevelItem(item)
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def addSessionItem(self, sessionDict:dict):
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if self.mode == "nested":
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self._addItemNested(sessionDict)
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elif self.mode == "flat":
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self._addItemFlat(sessionDict)
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else:
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raise ValueError("Unknown SessionTree display mode")
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def deleteSessionItem(self, item:SessionItem):
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"""Instruct the engine to fully delete a complete session item.
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Will show a warning before."""
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text = QtCore.QCoreApplication.translate("SessionTree", "About to delete Session {}").format(item.sessionDict["nsmSessionName"])
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informativeText = QtCore.QCoreApplication.translate("SessionTree", "All files in the project directory will be irreversibly deleted.")
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title = QtCore.QCoreApplication.translate("SessionTree", "All files in the project directory will be irreversibly deleted.")
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title = QtCore.QCoreApplication.translate("SessionTree", "About to delete Session {}").format(item.sessionDict["nsmSessionName"])
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box = QtWidgets.QMessageBox(self.treeWidget)
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box.setIcon(box.Warning)
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box.setText(text)
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box.setWindowTitle(title)
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box.setInformativeText(informativeText)
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keep = box.addButton(QtCore.QCoreApplication.translate("SessionTree", "Keep Session"), box.RejectRole)
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box.addButton(QtCore.QCoreApplication.translate("SessionTree", "Delete!"), box.AcceptRole)
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box.setDefaultButton(keep)
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ret = box.exec() #0 or 1. Return values are NOT the button roles.
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if ret: #Delete
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api.sessionDelete(item.sessionDict["nsmSessionName"])
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def contextMenu(self, qpoint):
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item = self.treeWidget.itemAt(qpoint)
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if not type(item) is SessionItem:
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return
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menu = QtWidgets.QMenu()
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listOfLabelsAndFunctions = [
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(QtCore.QCoreApplication.translate("SessionTree", "Copy Session"), lambda: self._askForCopyAndCopy(item.sessionDict["nsmSessionName"]))
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]
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if item.isDisabled():
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listOfLabelsAndFunctions.append((QtCore.QCoreApplication.translate("SessionTree", "Force Lock Removal"), lambda: api.sessionForceLiftLock(item.sessionDict["nsmSessionName"])))
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else:
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listOfLabelsAndFunctions.append((QtCore.QCoreApplication.translate("SessionTree", "Rename Session"), lambda: self._askForNameAndRenameSession(item.sessionDict["nsmSessionName"])))
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#Delete should be the bottom item.
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listOfLabelsAndFunctions.append((QtCore.QCoreApplication.translate("SessionTree", "Delete Session"), lambda: self.deleteSessionItem(item)))
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for text, function in listOfLabelsAndFunctions:
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if function is None:
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l = QtWidgets.QLabel(text)
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l.setAlignment(QtCore.Qt.AlignCenter)
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a = QtWidgets.QWidgetAction(menu)
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a.setDefaultWidget(l)
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menu.addAction(a)
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else:
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a = QtWidgets.QAction(text, menu)
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menu.addAction(a)
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a.triggered.connect(function)
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pos = QtGui.QCursor.pos()
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pos.setY(pos.y() + 5)
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menu.exec_(pos)
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#GUI Signals
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def _reactSignal_itemDoubleClicked(self, item:QtWidgets.QTreeWidgetItem, column:int):
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if not item.isDisabled() and type(item) is SessionItem:
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api.sessionOpen(item.sessionDict["nsmSessionName"])
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def _reactSignal_openSelected(self):
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item = self.treeWidget.currentItem()
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if item:
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self._reactSignal_itemDoubleClicked(item, column=0)
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def _reactSignal_newSession(self):
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widget = NewSessionDialog(parent=self.treeWidget, startwith="")
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#widget = ProjectNameWidget(parent=self.treeWidget, startwith="")
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if widget.result:
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#result = {"name":str, "startclients":list}
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api.sessionNew(widget.result["name"], widget.result["startclients"])
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def _askForCopyAndCopy(self, nsmSessionName:str):
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"""Called by button and context menu"""
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widget = ProjectNameWidget(parent=self.treeWidget, startwith=nsmSessionName+"-copy")
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if widget.result:
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api.sessionCopy(nsmSessionName, widget.result)
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def _askForNameAndRenameSession(self, nsmSessionName:str):
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"""Only for non-locked sessions. Context menu is only available if not locked."""
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widget = ProjectNameWidget(parent=self.treeWidget, startwith=nsmSessionName)
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if widget.result and not widget.result == nsmSessionName:
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api.sessionRename(nsmSessionName, widget.result)
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def _reactSignal_rememberSorting(self, *args):
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self.sortByColumnValue = self.treeWidget.header().sortIndicatorSection()
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self.sortDescendingValue = self.treeWidget.header().sortIndicatorOrder()
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def _reactSignal_restoreSorting(self, *args):
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"""Do not use as signal!!! Will lead to infinite recursion since Qt 5.12.2"""
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#self.treeWidget.sortItems(self.sortByColumnValue, self.sortDescendingValue)
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raise RuntimeError()
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def _reactSignal_nestedFlatChanged(self, checkStatus:bool):
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"""#flat does not create directory items but changes the session name to dir/foo/bar"""
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if checkStatus:
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self.mode = "nested"
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else:
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self.mode = "flat"
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#And rebuild the items without fetching new data.
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if self._cachedSessionDicts: #not startup
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self._reactCallback_sessionsChanged(self._cachedSessionDicts)
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self.treeWidget.sortItems(self.sortByColumnValue, self.sortDescendingValue)
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