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/* ************************************************************************
qooxdoo - the new era of web development
http://qooxdoo.org
Copyright:
2006 by STZ-IDA, Germany, http://www.stz-ida.de
License:
LGPL 2.1: http://www.gnu.org/licenses/lgpl.html
Authors:
* Til Schneider (til132)
************************************************************************ */
/* ************************************************************************
#module(ui_table)
************************************************************************ */
/**
* A selection manager. This is a helper class that handles all selection
* related events and updates a SelectionModel.
* <p>
* Widgets that support selection should use this manager. This way the only
* thing the widget has to do is mapping mouse or key events to indexes and
* call the corresponding handler method.
*
* @see SelectionModel
*/
qx.OO.defineClass("qx.ui.table.SelectionManager", qx.core.Object,
function() {
qx.core.Object.call(this);
});
/**
* The selection model where to set the selection changes.
*/
qx.OO.addProperty({ name:"selectionModel", type:"object", instance:"qx.ui.table.SelectionModel" });
/**
* Handles the mouse down event.
*
* @param index {int} the index the mouse is pointing at.
* @param evt {Map} the mouse event.
*/
qx.Proto.handleMouseDown = function(index, evt) {
if (evt.isLeftButtonPressed()) {
var selectionModel = this.getSelectionModel();
if (!selectionModel.isSelectedIndex(index)) {
// This index is not selected -> We react when the mouse is pressed (because of drag and drop)
this._handleSelectEvent(index, evt);
this._lastMouseDownHandled = true;
} else {
// This index is already selected -> We react when the mouse is released (because of drag and drop)
this._lastMouseDownHandled = false;
}
} else if (evt.isRightButtonPressed() && evt.getModifiers() == 0) {
var selectionModel = this.getSelectionModel();
if (!selectionModel.isSelectedIndex(index)) {
// This index is not selected -> Set the selection to this index
selectionModel.setSelectionInterval(index, index);
}
}
}
/**
* Handles the mouse up event.
*
* @param index {int} the index the mouse is pointing at.
* @param evt {Map} the mouse event.
*/
qx.Proto.handleMouseUp = function(index, evt) {
if (evt.isLeftButtonPressed() && !this._lastMouseDownHandled) {
this._handleSelectEvent(index, evt);
}
}
/**
* Handles the mouse click event.
*
* @param index {int} the index the mouse is pointing at.
* @param evt {Map} the mouse event.
*/
qx.Proto.handleClick = function(index, evt) {
}
/**
* Handles the key down event that is used as replacement for mouse clicks
* (Normally space).
*
* @param index {int} the index that is currently focused.
* @param evt {Map} the key event.
*/
qx.Proto.handleSelectKeyDown = function(index, evt) {
this._handleSelectEvent(index, evt);
};
/**
* Handles a key down event that moved the focus (E.g. up, down, home, end, ...).
*
* @param index {int} the index that is currently focused.
* @param evt {Map} the key event.
*/
qx.Proto.handleMoveKeyDown = function(index, evt) {
var selectionModel = this.getSelectionModel();
switch (evt.getModifiers()) {
case 0:
selectionModel.setSelectionInterval(index, index);
break;
case qx.event.type.DomEvent.SHIFT_MASK:
var anchor = selectionModel.getAnchorSelectionIndex();
if (anchor == -1) {
selectionModel.setSelectionInterval(index, index);
} else {
selectionModel.setSelectionInterval(anchor, index);
}
break;
}
}
/**
* Handles a select event.
*
* @param index {int} the index the event is pointing at.
* @param evt {Map} the mouse event.
*/
qx.Proto._handleSelectEvent = function(index, evt) {
var selectionModel = this.getSelectionModel();
if (evt.getShiftKey()) {
var leadIndex = selectionModel.getLeadSelectionIndex();
if (index != leadIndex || selectionModel.isSelectionEmpty()) {
// The lead selection index was changed
var anchorIndex = selectionModel.getAnchorSelectionIndex();
if (anchorIndex == -1) {
anchorIndex = index;
}
if (evt.isCtrlOrCommandPressed()) {
selectionModel.addSelectionInterval(anchorIndex, index);
} else {
selectionModel.setSelectionInterval(anchorIndex, index);
}
}
} else if (evt.isCtrlOrCommandPressed()) {
if (selectionModel.isSelectedIndex(index)) {
selectionModel.removeSelectionInterval(index, index);
} else {
selectionModel.addSelectionInterval(index, index);
}
} else {
selectionModel.setSelectionInterval(index, index);
}
}
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