ó /¾I]c@s¸dZddlmZmZmZddlmZddlmZm Z m Z m Z de fd„ƒYZ edefd „ƒYƒZ d „Zed e fd „ƒYƒZd „ZdS(s]Link and DirectionalLink classes. Propagate changes between widgets on the javascript side. i(tWidgettregistertwidget_serialization(t CoreWidgetiÿÿÿÿ(tUnicodetTupletInstancet TraitErrortWidgetTraitTuplecBs&eZdZdZd„Zd„ZRS(s<Traitlet for validating a single (Widget, 'trait_name') pairsA (Widget, 'trait_name') paircKs)tt|ƒjttƒtƒ|dS(N(tsuperRt__init__RRR(tselftkwargs((s=lib/python2.7/site-packages/ipywidgets/widgets/widget_link.pyR scCsštt|ƒj||ƒ}|\}}|jƒj|ƒ}d|jj|f}|dkrqtd|ƒ‚n%|j jdƒs–td|ƒ‚n|S(Ns%s.%ssNo such trait: %stsyncs%s cannot be synced( R Rtvalidate_elementsttraitstgett __class__t__name__tNonet TypeErrortmetadata(R tobjtvaluetwidgett trait_namettraitt trait_repr((s=lib/python2.7/site-packages/ipywidgets/widgets/widget_link.pyRs  (Rt __module__t__doc__t info_textR R(((s=lib/python2.7/site-packages/ipywidgets/widgets/widget_link.pyRs tLinkcBsteZdZedƒjdeƒZeddƒjdeeZ eddƒjdeeZ d„Z d„Z RS(s“Link Widget source: a (Widget, 'trait_name') tuple for the source trait target: a (Widget, 'trait_name') tuple that should be updated t LinkModelR thelps&The target (widget, 'trait_name') pairs&The source (widget, 'trait_name') paircKs.||d<||d>> c = link((widget1, 'value'), (widget2, 'value')) (R(tattr1tattr2((s=lib/python2.7/site-packages/ipywidgets/widgets/widget_link.pytjslink;stDirectionalLinkcBs&eZdZedƒjdeƒZRS(s½A directional link source: a (Widget, 'trait_name') tuple for the source trait target: a (Widget, 'trait_name') tuple that should be updated when the source trait changes. tDirectionalLinkModelR (RRRRR&R'R((((s=lib/python2.7/site-packages/ipywidgets/widgets/widget_link.pyR,NscCs t||ƒS(sŸLink a source widget attribute with a target widget attribute. The link is created in the front-end and does not rely on a roundtrip to the backend. Parameters ---------- source : a (Widget, 'trait_name') tuple for the source trait target : a (Widget, 'trait_name') tuple for the target trait Examples -------- >>> c = dlink((src_widget, 'value'), (tgt_widget, 'value')) (R,(R"R#((s=lib/python2.7/site-packages/ipywidgets/widgets/widget_link.pytjsdlinkYsN(RRRRRt widget_coreRt traitletsRRRRRRR+R,R.(((s=lib/python2.7/site-packages/ipywidgets/widgets/widget_link.pyts"