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Grid.py
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Grid.py
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# Copyright 2006 James Tauber and contributors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from pyjamas import DOM
from pyjamas.ui.HTMLTable import HTMLTable
from pyjamas.ui.CellFormatter import CellFormatter
from pyjamas.ui.RowFormatter import RowFormatter
class Grid(HTMLTable):
def __init__(self, rows=0, columns=0, **kwargs):
self.numColumns = 0
self.numRows = 0
HTMLTable.__init__(self, **kwargs)
if rows > 0 or columns > 0:
self.resize(rows, columns)
def resize(self, rows, columns):
self.resizeColumns(columns)
self.resizeRows(rows)
def resizeColumns(self, columns):
if self.numColumns == columns:
return
if self.numColumns > columns:
for i in range(0, self.numRows):
for j in range(self.numColumns - 1, columns - 1, -1):
self.removeCell(i, j)
else:
for i in range(self.numRows):
for j in range(self.numColumns, columns):
self.insertCell(i, j)
self.numColumns = columns
def resizeRows(self, rows):
if self.numRows == rows:
return
if self.numRows < rows:
self.addRows(self.getBodyElement(), rows - self.numRows, self.numColumns)
self.numRows = rows
else:
while self.numRows > rows:
self.numRows -= 1
self.removeRow(self.numRows)
def createCell(self):
td = HTMLTable.createCell(self)
DOM.setInnerHTML(td, " ")
return td
def clearCell(self, row, column):
td = self.cellFormatter.getElement(row, column)
b = HTMLTable.internalClearCell(self, td)
DOM.setInnerHTML(td, " ")
return b
def prepareCell(self, row, column):
pass
def prepareRow(self, row):
pass
def getCellCount(self, row):
return self.numColumns
def getColumnCount(self):
return self.numColumns
def getRowCount(self):
return self.numRows
def addRows(self, table, numRows, columns):
td = DOM.createElement("td")
DOM.setInnerHTML(td, " ")
row = DOM.createElement("tr")
for cellNum in range(columns):
cell = td.cloneNode(True)
row.appendChild(cell)
for rowNum in range(numRows):
table.appendChild(row.cloneNode(True))