OOoBasic/Dialog/GridControl33

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# -*- coding: utf-8 -*-
import uno, unohelper
 
from com.sun.star.awt.grid import XGridDataModel, GridDataEvent
 
 
class GridDataModelBase(unohelper.Base, XGridDataModel, object):
    """ base class for custom data model for grid control."""
    
    RowAdded = 0x1
    RowRemoved = 0x10
    DataChanged = 0x100
    
    def __init__(self, ctx):
        """ corereflection is used to call method of the listeners."""
        self.ctx = ctx
        self.listeners = []
        self._reflection = self.ctx.getServiceManager().createInstanceWithContext(
            'com.sun.star.reflection.CoreReflection', self.ctx)
    
    def _broadcast_added(self, index, header, data):
        """ broadcast about addition. """
        ev = GridDataEvent(self, '', None, None, index, header, data)
        self._broadcast(self.RowAdded, ev)
    
    def _broadcast_removed(self, index):
        """ broadcast removement. """
        ev = GridDataEvent()
        ev.index = index
        self._broadcast(self.RowRemoved, ev)
    
    def _broadcast_changed(self, name, index, old_value, new_value):
        """ broadcast some changes. """
        if name == 'RowUpdated':
            old_value = uno.Any('[]long', old_value)
        ev = GridDataEvent(self, name, old_value, new_value, index, '', ())
        self._broadcast(self.DataChanged, ev)
    
    def _broadcast(self, update_type, ev):
        """ broadcasting """
        method_name = ''
        if update_type == self.RowAdded:
            method_name = 'rowAdded'
        elif update_type == self.RowRemoved:
            method_name = 'rowRemoved'
        elif update_type == self.DataChanged:
            method_name = 'dataChanged'
        else:
            return
        for listener in self.listeners:
            idl_method = self._reflection.getType(listener).getMethod(method_name)
            if idl_method:
                try:
                    idl_method.invoke(listener, (ev,))
                except Exception as e:
                    print(e)
    
    def removeDataListener(self, listener):
        for k, v in enumerate(self.listeners):
            if listener == v:
                del self.listener[k]
    
    def addDataListener(self, listener):
        self.listeners.append(listener)
 
 
 
class CustomGridDataModel(GridDataModelBase):
    """ Customizable data mode. """
    
    def __init__(self, ctx):
        GridDataModelBase.__init__(self, ctx)
        self.RowHeight = 10
        self.RowHeaderWidth = 20
        self._headers = []
        self._rows = []
    
    @property
    def Data(self):
        """ ondemand created data. """
        return tuple([tuple(row) for row in self._rows])
    
    @property
    def RowHeaders(self):
        """ headers """
        return tuple(self._headers)
    
    @RowHeaders.setter
    def RowHeaders(self, value):
        pass
    
    # XGridDataModel
    def getRowCount(self):
        """ number of rows. """
        return len(self._rows)
    
    def addRow(self, header, row):
        """ new row. """
        if isinstance(header, basestring) and isinstance(row, tuple):
            self._headers.append(header)
            self._rows.append(row)
            self._broadcast_added(len(self._rows) - 1, header, row)
    
    def removeRow(self, index):
        """ remove specified row."""
        if 0 <= index < len(self._rows):
            del self._headers[index]
            del self._rows[index]
            self._broadcast_removed(index)
    
    def removeAll(self):
        """ all rows are removed. """
        self._headers = []
        self._rows = []
        self._broadcast_removed(-1)
    
    def updateCell(self, index, column_index, value):
        """ specific individual cell is updated."""
        if 0 <= index < len(self._rows):
            row = list(self._rows[index])
            if 0 <= column_index < len(row):
                row[column_index] = value
                self._rows[index] = row
                self._broadcast_changed('CellUpdated', index, column_index, value)
    
    def updateRow(self, index, columns, values):
        """ a few cells are update in the same row. """
        if isinstance(columns, tuple) and isinstance(values, tuple) and \
            len(columns) == len(values):
            if 0 <= index < len(self._rows):
                row = list(self._rows[index])
                for i, v in zip(columns, values):
                    row[i] = v
                self._rows[index] = tuple(row)
                self._broadcast_changed('RowUpdated', index, columns, values)
 
 
 
def grid_custom_data_model_test(*args):
    """ test case for custom grid data model."""
    ctx = XSCRIPTCONTEXT.getComponentContext()
    smgr = ctx.getServiceManager()
    dp = smgr.createInstanceWithContext(
        'com.sun.star.awt.DialogProvider', ctx)
    
    dlg = dp.createDialog('vnd.sun.star.script:Standard.Dialog1?location=application')
    dlg_model = dlg.getModel()
    
    grid_model = dlg_model.createInstance(
        'com.sun.star.awt.grid.UnoControlGridModel')
    grid_model.setPropertyValues(
        ('Height', 'PositionX', 'PositionY', 'Width'), 
        (100, 3, 3, 100))
    grid_model.ShowColumnHeader = True
    
    # add columns
    oGridCol1 = smgr.createInstanceWithContext(
        "com.sun.star.awt.grid.GridColumn", ctx)
    oGridCol1.Title = "Col 1"
    oGridCol2 = smgr.createInstanceWithContext(
        "com.sun.star.awt.grid.GridColumn", ctx)
    oGridCol2.Title = "Col 2"
    
    oColModel = smgr.createInstanceWithContext(
        "com.sun.star.awt.grid.DefaultGridColumnModel", ctx)
    oColModel.addColumn(oGridCol1)
    oColModel.addColumn(oGridCol2)
    grid_model.ColumnModel = oColModel
    
    
    # create grid data model
    use_default = False
    if use_default:
        # with default grid data model
        dataModel = smgr.createInstanceWithContext(
            "com.sun.star.awt.grid.DefaultGridDataModel", ctx)
    else:
        # using custom one
        #print("CustomGridDataModel is used.")
        dataModel = CustomGridDataModel(ctx)
    
    grid_model.GridDataModel = dataModel
    
    dataModel.addRow("1", ("getByName", "1_2"))
    dataModel.addRow("2", ("2_1", "2_2"))
    
    dlg_model.insertByName('Grid1', grid_model)
    
    # if broadcasting about row addition is correctly sended, 3rd row is shown
    dataModel.addRow("3", ("...", "1_2"))
    
    #dataModel.updateCell(0, 0, 'get?')
    dataModel.updateRow(1, (0, ), ("updated>", ))
    
    dlg.execute()