B \N% @sdZddlZddlZddlmZddlmZddlmZdZ dZ dZ d Z d Z d Zed e d e de de de diZGdddeZeZejdeddZddZddZddZddZd'ddZdd Zd!d"Zd#d$Zd%d&ZdS)(aD This module contains factory functions that attempt to return Qt submodules from the various python Qt bindings. It also protects against double-importing Qt with different bindings, which is unstable and likely to crash This is used primarily by qt and qt_for_kernel, and shouldn't be accessed directly from the outside N)partial) import_module) check_versionZpyqtZpyqt5Zpyqtv1Z pyqtdefaultZpysideZpyside2PySide2PySidePyQt4PyQt5c@s2eZdZdZddZddZd ddZd d ZdS) ImportDenierzfImport Hook that will guard against bad Qt imports once IPython commits to a specific binding cCs t|_dS)N)set_ImportDenier__forbidden)selfr :lib/python3.7/site-packages/IPython/external/qt_loaders.py__init__(szImportDenier.__init__cCstj|d|j|dS)N)sysmodulespopr add)r module_namer r rforbid+szImportDenier.forbidNcCs|rdS||jkr|SdS)N)r )r fullnamepathr r r find_module/s zImportDenier.find_modulecCstd|tfdS)Nzi Importing %s disabled by IPython, which has already imported an Incompatible QT Binding: %s ) ImportError loaded_api)r rr r r load_module5szImportDenier.load_module)N)__name__ __module__ __qualname____doc__rrrrr r r rr #s  r cCs|tkr(tdtdtdnn|tkrPtdtdtdnF|tkrxtdtdtdntdtdtddS)z[Commit to a particular API, and trigger ImportErrors on subsequent dangerous importsrrrrN)QT_API_PYSIDE2IDr QT_API_PYSIDE QT_API_PYQT5)apir r r commit_api?s           r%cCsLdtjkrtdkrtStSn*dtjkr,tSdtjkr:tSdtjkrHtSdS)zReturn which API is loaded, if any If this returns anything besides None, importing any other Qt binding is unsafe. Returns ------- None, 'pyside2', 'pyside', 'pyqt', 'pyqt5', or 'pyqtv1' z PyQt4.QtCorez PySide.QtCorezPySide2.QtCorez PyQt5.QtCoreN)rr qtapi_version QT_API_PYQT QT_API_PYQTv1r"r r#r r r rrUs     rc Cst|}ddlm}dddg}|ttfkr4|dxB|D]:}y|d||f}Wntk rfdSX|d kr:dSq:W|tkrdd l}t |j d Sd S) aSSafely check for PyQt4/5, PySide or PySide2, without importing submodules Parameters ---------- api : str [ 'pyqtv1' | 'pyqt' | 'pyqt5' | 'pyside' | 'pyside2' | 'pyqtdefault'] Which module to check for Returns ------- True if the relevant module appears to be importable r) find_specQtCoreQtGuiQtSvg QtWidgetsz%s.%sFNz1.0.3T) api_to_moduleimportlib.utilr*r#r appendrr"rr __version__)r$rr*ZrequiredZsubmodspecrr r r has_bindingms       r4cCsFy ddl}Wntk r dSXy |dStk r@dSXdS)zReturn which QString API has been set, if any Returns ------- The QString API version (1 or 2), or None if not set rNQString)siprgetapi ValueError)r6r r rr's  r'cCs8t|s dSt}|tkr(|ttdgkS||dgkSdS)z?Safely query whether an API is importable, without importing itFN)r4rQT_API_PYQT_DEFAULTr(r))r$Zcurrentr r r can_imports r:r&cCsddl}|dk r(|d||d|ddlm}m}m}t|jdsVtd|j|j |_ |j |_ | d}|dkr|tnt}||||fS) z Import PyQt4 Parameters ---------- version : 1, 2, or None Which QString/QVariant API to use. Set to None to use the system default ImportErrors rasied within this function are non-recoverable rNr5ZQVariant)r,r+r-z4.7z'IPython requires PyQt4 >= 4.7, found %s)r6Zsetapirr,r+r-rZPYQT_VERSION_STRr pyqtSignalSignalpyqtSlotSlotr7r)r()versionr6r,r+r-r$r r r import_pyqt4s     rAcCs^ddlm}m}m}m}|j|_|j|_t d}|j |j |j |j t }||||fS)zX Import PyQt5 ImportErrors rasied within this function are non-recoverable r)r+r-r.r, QtGuiCompat)rr+r-r.r,r<r=r>r?types ModuleType__dict__updater#)r+r-r.r,rBr$r r r import_pyqt5s rGcCs ddlm}m}m}|||tfS)zY Import PySide ImportErrors raised within this function are non-recoverable r)r,r+r-)rr,r+r-r")r,r+r-r r r import_pysidesrHcCs\ddlm}m}m}m}m}td}|j |j|j |j|j |j|||t fS)zZ Import PySide2 ImportErrors raised within this function are non-recoverable r)r,r+r-r.QtPrintSupportrB) rr,r+r-r.rIrCrDrErFr )r,r+r-r.rIrBr r rimport_pyside2s  rJcCstttttttttt tddt t tddi}x|D]V}||krbt d|d dd| Dft|slq2||}|d}t||SWtd ttttttttt|fdS) a Attempt to import Qt, given a preference list of permissible bindings It is safe to call this function multiple times. Parameters ---------- api_options: List of strings The order of APIs to try. Valid items are 'pyside', 'pyside2', 'pyqt', 'pyqt5', 'pyqtv1' and 'pyqtdefault' Returns ------- A tuple of QtCore, QtGui, QtSvg, QT_API The first three are the Qt modules. The last is the string indicating which module was loaded. Raises ------ ImportError, if it isn't possible to import any requested bindings (either becaues they aren't installed, or because an incompatible library has already been installed) r;)r@Nz'Invalid Qt API %r, valid values are: %sz, cSsg|] }d|qS)z%rr ).0kr r r .szload_qt..a@ Could not load requested Qt binding. Please ensure that PyQt4 >= 4.7, PyQt5, PySide >= 1.0.3 or PySide2 is available, and only one is imported per session. Currently-imported Qt library: %r PyQt4 available (requires QtCore, QtGui, QtSvg): %s PyQt5 available (requires QtCore, QtGui, QtSvg, QtWidgets): %s PySide >= 1.0.3 installed: %s PySide2 installed: %s Tried to load: %r )r rJr"rHr(rAr#rGr)rr9 RuntimeErrorjoinkeysr:r%rrr4)Z api_optionsloadersr$resultr r rload_qts0     rT)r&)rrrC functoolsr importlibrZIPython.utils.versionrr(r#r)r9r"r r/objectr r! meta_pathinsertr%rr4r'r:rArGrHrJrTr r r r s<   ' %