kivyblocks/kivyblocks/dg.py
2020-11-20 19:43:05 +08:00

401 lines
10 KiB
Python

import time
from kivy.uix.gridlayout import GridLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.scrollview import ScrollView
from kivy.uix.label import Label
from kivy.uix.button import ButtonBehavior
from kivy.clock import Clock
from kivy.properties import BooleanProperty
from kivy.properties import ListProperty
from kivy.graphics import Color, Rectangle
from kivy.app import App
from kivy.factory import Factory
from appPublic.dictObject import DictObject
from appPublic.timecost import TimeCost
from appPublic.uniqueID import getID
from .utils import CSize, setSizeOptions, loading, loaded, absurl, alert
from .baseWidget import Text
from .widgetExt import ScrollWidget
from .paging import Paging, RelatedLoader
from .ready import WidgetReady
from .toolbar import Toolbar
from .i18n import I18nText
class BLabel(ButtonBehavior, Text):
def __init__(self, **kw):
ButtonBehavior.__init__(self)
Text.__init__(self,**kw)
class Cell(BoxLayout):
def __init__(self,row,desc):
"""
desc:{
width,
datatype:fff
value:
format:
on_press:
}
"""
self.desc = desc
self.row = row
super().__init__(size_hint=(None,None),
width = self.desc['width'],
height = self.row.part.datagrid.rowHeight()
)
if not self.row.header and self.desc.get('viewer'):
viewer = self.desc.get('viewer')
blocks = Factory.Blocks()
if isinstance(viewer,str):
l = self.desc.copy()
l['row'] = self.row
viewer = blocks.eval(viewer,l)
if isinstance(viewer,dict):
print('viewer = ', viewer)
w = blocks.widgetBuild(viewer)
self.add_widget(w)
return
if desc['header']:
bl = I18nText(otext=str(desc['value']),
font_size=CSize(1),
halign='left'
)
else:
bl = BLabel(text = str(desc['value']),
font_size=CSize(1),
halign='left'
)
self.add_widget(bl)
bl.bind(on_press=self.cell_press)
def cell_press(self,obj):
self.row.selected()
class Row(GridLayout):
def __init__(self,part, rowdesc,header=False,data=None):
"""
rowdesc=[
{
width,
name
value
on_press
}
"""
self.part = part
self.header = header
self.row_data = data
self.row_id = None
self.linewidth = 1
self.rowdesc = rowdesc
super().__init__(cols=len(self.rowdesc),spacing=self.linewidth)
# Clock.schedule_once(self.init,0)
self.init(0)
def init(self,t):
w = 0
h = 0
for c in self.rowdesc:
c['header'] = self.header
cell = Cell(self,c)
self.add_widget(cell)
w += cell.width
if cell.height > h:
h = cell.height
self.size_hint = None,None
self.width = w + self.linewidth * 2 * len(self.rowdesc)
self.height = h #self.part.datagrid.rowHeight()
def selected(self):
if not hasattr(self,'row_data'):
return # header
print('row selected',self.row_id, self.row_data)
self.part.datagrid.row_selected = True
self.part.datagrid.select_rowid = self.row_id
self.part.datagrid.dispatch('on_selected',self)
class Header(WidgetReady, ScrollWidget):
def __init__(self,part,**kw):
self.part = part
ScrollWidget.__init__(self,**kw)
WidgetReady.__init__(self)
self.init(1)
self.bind(on_scroll_stop=self.part.datagrid.on_scrollstop)
def init(self,t):
rd = [ f.copy() for f in self.part.rowdesc ]
[ f.update({'value':self.part.fields[i]['label']}) for i,f in enumerate(rd) ]
self.header = Row(self.part,rd,header=True)
self.add_widget(self.header)
self.height = self.header.height
class Body(ScrollWidget):
def __init__(self,part,**kw):
self.part = part
ScrollWidget.__init__(self,**kw)
self.idRow = {}
self.bind(on_scroll_stop=self.part.datagrid.on_scrollstop)
def addRow(self,id, data,index=0):
rd = [ f.copy() for f in self.part.rowdesc ]
[ f.update({'value':data.get(f['name'])}) for f in rd ]
row = Row(self.part,rd,data=data)
row.row_id = id
self.add_widget(row,index=index)
self.idRow[id] = row
return row
def clearRows(self):
self.idRow = {}
self.clear_widgets()
def delRowById(self,id):
row = self.idRow[id]
self.remove_widget(row)
del self.idRow[id]
def getRowData(self,rowid):
return self.idRow[rowid].row_data
def getRowHeight(self):
return self.part.datagrid.rowHeight()
class DataGridPart(WidgetReady, BoxLayout):
def __init__(self,dg, freeze_flag, fields):
self.datagrid = dg
self.fields = fields
self.freeze_flag = freeze_flag
self.fields_width = None
BoxLayout.__init__(self, orientation='vertical')
WidgetReady.__init__(self)
# Clock.schedule_once(self.init,0.1)
self.init(0)
def setWidth(self):
if self.freeze_flag:
self.size_hint_x = None
self.width = self.getFieldsWidth()
def getFieldsWidth(self):
if not self.fields_width:
width = 0
for f in self.rowdesc:
width += f['width']
self.fields_width = width
return self.fields_width
def init(self,t):
rd = []
for f in self.fields:
r = f.copy()
r['width'] = CSize(f.get('width',10))
rd.append(r)
self.rowdesc = rd
self.setWidth()
kw = {}
if self.freeze_flag:
kw['width'] = self.fields_width
kw['size_hint'] = (None,None)
else:
kw['size_hint'] = (1,None)
kw['height'] = self.datagrid.rowHeight()
if not self.datagrid.noheader:
self.header = Header(self,**kw)
self.add_widget(self.header)
self.body = Body(self)
self.add_widget(self.body)
if not self.freeze_flag:
self.body.bind(pos=self.datagrid.bodyOnSize,
size=self.datagrid.bodyOnSize)
def clearRows(self):
return self.body.clearRows()
def addRow(self,id, data):
return self.body.addRow(id, data)
class DataGrid(WidgetReady, BoxLayout):
row_selected = BooleanProperty(False)
def __init__(self,**options):
kw = DictObject()
kw = setSizeOptions(options,kw)
kw.orientation = 'vertical'
WidgetReady.__init__(self)
BoxLayout.__init__(self,**kw)
self.parenturl = options.get('parenturl',None)
self.options = options
self.noheader = options.get('noheader',False)
self.header_bgcolor = options.get('header_bgcolor',[0.29,0.29,0.29,1])
self.body_bgcolor = options.get('body_bgcolor',[0.25,0.25,0.25,1])
self.color = options.get('color',[0.91,0.91,0.91,1])
self.row_height = None
self.on_sizeTask = None
self.selected_rowid = None
self.dataUrl = self.options.get('dataurl')
self.show_rows = 0
self.toolbar = None
self.freeze_part = None
self.normal_part = None
self.page_rows = self.options.get('page_rows', 60)
self.params = self.options.get('params',{})
self.total_cnt = 0
self.max_row = 0
self.curpage = 0
self.loading = False
self.freeze_fields = self.getPartFields(freeze_flag=True)
self.normal_fields = self.getPartFields(freeze_flag=False)
ldr_desc = options.get('dataloader')
if not ldr_desc:
raise Exception('DataGrid need a DataLoader')
self.dataloader = RelatedLoader(target=self, **ldr_desc)
self.dataloader.bind(on_deletepage=self.delete_page)
self.dataloader.bind(on_pageloaded=self.add_page)
self.dataloader.bind(on_newbegin=self.clearRows)
self.register_event_type('on_selected')
self.register_event_type('on_scrollstop')
self.createDataGridPart()
self.createToolbar()
if self.toolbar:
self.add_widget(self.toolbar)
b = BoxLayout(orientation='horizontal')
if self.freeze_part:
b.add_widget(self.freeze_part)
if self.normal_part:
b.add_widget(self.normal_part)
self.add_widget(b)
def locater(self,pos):
self.normal_part.body.scroll_y = pos
if self.freeze_part:
self.freeze_part.body.scroll_y = pos
def on_scrollstop(self,o,v=None):
if not self.noheader and o == self.normal_part.header:
self.normal_part.body.scroll_x = o.scroll_x
return
if o == self.normal_part.body:
if not self.noheader:
self.normal_part.header.scroll_x = o.scroll_x
if self.freeze_part:
self.freeze_part.body.scroll_y = o.scroll_y
if self.freeze_part and o == self.freeze_part.body:
self.normal_part.body.scroll_y = o.scroll_y
if o.scroll_y <= 0.001:
self.dataloader.loadNextPage()
if o.scroll_y >= 0.999:
self.dataloader.loadPreviousPage()
def getData(self):
if not self.row_selected:
return None
return self._getRowData(self.select_rowid)
def _getRowData(self, rowid):
d = {}
if self.freeze_part:
d.update(self.freeze_part.body.getRowData(rowid))
d.update(self.normal_part.body.getRowData(rowid))
print('getData() return=',d)
return DictObject(**d)
def bodyOnSize(self,o,s):
if self.on_sizeTask is not None:
self.on_sizeTask.cancel()
self.on_sizeTask = Clock.schedule_once(self.calculateShowRows,0.3)
def rowHeight(self):
if not self.row_height:
self.row_height = CSize(self.options.get('row_height',1.8))
return self.row_height
def calculateShowRows(self,t):
print('body height=',self.normal_part.body.height
,'row_height=',self.rowHeight()
)
self.show_rows = int(self.normal_part.body.height/self.rowHeight())
self.dataloader.setPageRows(self.show_rows)
def getShowRows(self):
if self.show_rows == 0:
return 60
return self.show_rows
def clearRows(self):
if self.freeze_part:
self.freeze_part.body.clearRows()
self.normal_part.body.clearRows()
def add_page(self,o,data):
ids = []
recs = data['data']
page = data['page']
dir = data['dir']
idx = 0
if dir == 'up':
recs.reverse()
idx = -1
for r in recs:
ids.append(self.addRow(r,index=idx))
self.dataloader.bufferObjects(page,ids)
x = self.dataloader.getLocater()
self.locater(x)
def delete_page(self,o,data):
for id in data:
self.delRow(id)
def addRow(self,data, **kw):
id = getID()
f_row = None
if self.freeze_part:
self.freeze_part.body.addRow(id, data, **kw)
self.normal_part.body.addRow(id, data, **kw)
return id
def delRow(self,id,**kw):
if self.freeze_part:
self.freeze_part.body.delRowById(id)
self.normal_part.body.delRowById(id)
def createToolbar(self):
if 'toolbar' in self.options.keys():
tb = self.options['toolbar']
self.toolbar = Toolbar(ancestor=self,**tb)
def on_selected(self,row):
self.selected_row = row
def loadData(self,**kwargs):
page = kwargs.get('page',1)
self.dataloader.do_search(None,{})
def createDataGridPart(self):
self.freeze_part = None
self.normal_part = None
if self.freeze_fields:
self.freeze_part = DataGridPart(self,True, self.freeze_fields)
if self.normal_fields:
self.normal_part = DataGridPart(self, False, self.normal_fields)
def getPartFields(self,freeze_flag:bool=False) -> list:
fs = []
for f in self.options['fields']:
if freeze_flag:
if f.get('freeze',False):
fs.append(f)
else:
if not f.get('freeze',False):
fs.append(f)
return fs
Factory.register('DataGrid',DataGrid)