154 lines
4.1 KiB
Python
154 lines
4.1 KiB
Python
"""
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BoxViewer options:
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{
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"dataloader":{
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"url",
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"method",
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"params"
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"filter":{
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}
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}
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"boxwidth",
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"boxheight",
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"viewer"
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"toolbar":{
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}
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}
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"""
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from traceback import print_exc
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from functools import partial
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from kivy.app import App
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from kivy.factory import Factory
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from kivy.utils import platform
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from kivy.uix.boxlayout import BoxLayout
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from .responsivelayout import VResponsiveLayout
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from .toolbar import Toolbar
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from .paging import Paging, RelatedLoader
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from .utils import CSize
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class BoxViewer(BoxLayout):
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def __init__(self, **options):
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self.toolbar = None
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self.parenturl = None
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self.dataloader = None
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self.initflag = False
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BoxLayout.__init__(self, orientation='vertical')
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self.selected_data = None
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self.options = options
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self.box_width = CSize(options['boxwidth'])
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self.box_height = CSize(options['boxheight'])
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self.viewContainer = VResponsiveLayout(cols=2,box_width=self.box_width)
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if options.get('toolbar'):
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self.toolbar = Toolbar(options['toolbar'])
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lopts = options['dataloader'].copy()
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self.dataloader = RelatedLoader(target=self,**lopts['options'])
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self.dataloader.bind(on_deletepage=self.deleteWidgets)
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self.dataloader.bind(on_pageloaded=self.addPageWidgets)
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self.dataloader.bind(on_newbegin=self.deleteAllWidgets)
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self.params = self.options['dataloader']['options'].get('params',{})
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if self.toolbar:
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self.add_widget(self.toolbar)
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if self.dataloader.widget:
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self.add_widget(self.dataloader.widget)
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self.dataloader.bind(on_submit=self.getParams)
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self.add_widget(self.viewContainer)
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self.register_event_type('on_selected')
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self.viewContainer.bind(size=self.resetCols,
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pos=self.resetCols)
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self.viewContainer.bind(on_scroll_stop=self.on_scroll_stop)
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def getParams(self,o,p):
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self.params = p
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def deleteAllWidgets(self,o):
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self.viewContainer.clear_widgets()
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def addPageWidgets(self,o,data):
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widgets = []
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recs = data['data']
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dir = data['dir']
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idx = 0
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if dir == 'up':
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recs.reverse()
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idx = -1
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print('addPageWidgets(),begin')
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for r in recs:
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self.showObject(widgets, r, index=idx)
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print('addPageWidgets(),widgets=',len(widgets))
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self.dataloader.bufferObjects(widgets)
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x = self.dataloader.getLocater()
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self.locater(x)
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def deleteWidgets(self,o,data):
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for w in data:
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self.viewContainer.remove_widget(w)
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def on_selected(self, o, v=None):
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print('BoxViewer(): on_selected fired....')
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def locater(self, pos):
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self.viewContainer.scroll_y = pos
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def resetCols(self,o=None, v=None):
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h = 0
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if self.toolbar:
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h += self.toolbar.height
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if self.dataloader.widget:
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h += self.dataloader.widget.height
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self.viewContainer.height = self.height - h
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self.viewContainer.setCols()
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if not self.initflag:
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self.dataloader.loadPage(1)
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self.initflag = True
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def showObject(self, holders, rec,index=0):
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def doit(self,holders,idx,o,w):
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print('showObject()...doit(),w=',w,o)
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w.bind(on_press=self.select_record)
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self.viewContainer.add_widget(w,index=idx)
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holders.append(w)
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def doerr(o,e):
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print_exc()
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print('showObject(),error=',e)
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raise e
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options = self.options['viewer'].copy()
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options['options']['record'] = rec
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options['options']['ancestor'] = self
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options['options']['size_hint'] = None,None
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options['options']['width'] = self.box_width
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options['options']['height'] = self.box_height
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blocks = Factory.Blocks()
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blocks.bind(on_built=partial(doit,self,holders,index))
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blocks.bind(on_failed=doerr)
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blocks.widgetBuild(options, ancestor=self)
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def on_scroll_stop(self,o,v=None):
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if o.scroll_y <= 0.001:
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self.dataloader.loadNextPage()
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if o.scroll_y >= 0.999:
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self.dataloader.loadPreviousPage()
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def select_record(self,o,v=None):
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self.selected_data = o.getRecord()
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d = {
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"page_rows":1,
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"page":self.selected_data['__posInSet__'],
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"dataurl":self.options['dataloader']['options']['dataurl'],
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"params":self.params
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}
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self.dispatch('on_selected',d)
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def getData(self):
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d = {
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"caller":self,
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"page_rows":1,
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"page":self.selected_data['__posInSet__'],
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"dataurl":self.options['dataloader']['options']['dataurl'],
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"params":self.params
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}
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return d
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