ZK Spreadsheet Essentials/Working with ZK Spreadsheet/Configure and Control ZK Spreadsheet/Get or Set Value, Formula, or Formatted Text

ZK Spreadsheet use Range.getEditText() to get cell's edit tet, and Range.setEditText(text) to set cell's text as input by user.

Scenario

Implement a formula editor to allow user input text, formula etc. For this function, we can use a Combobox to show the current cell, and use Textbox as a editor

<combobox id="focusCombobox" mold="rounded" style="text-align:center;"></combobox>
<textbox id="formulaEditor" cols="100"/>
<spreadsheet id="spreadsheet" src="/demo_sample.xls"	
			maxrows="200" 
			maxcolumns="40"
			width="100%"
			height="450px"></spreadsheet>

Current Cell

We can use onCellFocused event to get current focus cell.

Cell position

First, we need to get the current cell's position. We can get row, column index from CellEvent, then use Spreadsheet.getRowtitle() and Spreadsheet.getColumntitle() to get current cell's title.

public void onCellFocused$spreadsheet(CellEvent event) {
	int row = event.getRow();
	int col = event.getColumn();
	focusCombobox.setText(spreadsheet.getRowtitle(row) + spreadsheet.getColumntitle(col));
 ...

Cell value

After we get cell's position, we can get cell's value from Range.getEditText()

public void onCellFocused$spreadsheet(CellEvent event) {
        ...

	Sheet sheet = spreadsheet.getSelectedSheet();
	currentCell = Utils.getCell(sheet, row, col);
	currentRange = Ranges.range(sheet, row, col);
	formulaEditor.setText(currentRange.getEditText());
}

Editor

For editor, we can use onOK event, which menus when user click Enter keyboard, set cell's value and make spreadsheet's focus to next cell

public void onOK$formulaEditor() {
	currentRange.setEditText(formulaEditor.getText());
	spreadsheet.focusTo(currentCell.getRowIndex() + 1, currentCell.getColumnIndex());
}

Second, we can also use onChange and onChanging event to get current editor's value and set cell's value

public void onChanging$formulaEditor(InputEvent event) {
	if (currentCell.getCellType() != Cell.CELL_TYPE_FORMULA)
		currentRange.setEditText(event.getValue());
}
	
public void onChange$formulaEditor() {
	currentRange.setEditText(formulaEditor.getText());
}

All source code listed in this book is at Github.