public void init(HorizontalSplitPanel panel) {
this.panel = panel;
DOM.setStyleAttribute(panel.getElement(), "position", "relative");
expandToFitParentHorizontally(panel.getElement(LEFT));
expandToFitParentHorizontally(panel.getElement(RIGHT));
expandToFitParentHorizontally(panel.getSplitElement());
expandToFitParentUsingCssOffsets(panel.container);
// Right now, both panes are stacked on top of each other
// on either the left side or the right side of the containing
// panel. This happens because both panes have position:absolute
// and no left/top values. The panes will be on the left side
// if the directionality is LTR, and on the right side if the
// directionality is RTL. In the LTR case, we need to snap the
// right pane to the right of the container, and in the RTL case,
// we need to snap the left pane to the left of the container.
if (LocaleInfo.getCurrentLocale().isRTL()) {
setLeft(panel.getElement(LEFT), "0px");
} else {
setRight(panel.getElement(RIGHT), "0px");
}
}
@Override
public void init(HorizontalSplitPanel panel) {
this.panel = panel;
final String fullSize = "100%";
super.init(panel);
setHeight(panel.container, fullSize);
setHeight(panel.getElement(LEFT), fullSize);
setHeight(panel.getElement(RIGHT), fullSize);
setHeight(panel.getSplitElement(), fullSize);
}
/**
* Set the splitter's position in units of pixels.
*
* <p>px represents the splitter's position as a distance of px pixels from the left edge of the
* container. This is true even in a bidi environment. Callers of this method must be aware of
* this constraint.
*/
public void setSplitPositionUsingPixels(int px) {
final Element splitElem = panel.getSplitElement();
final int rootElemWidth = getOffsetWidth(panel.container);
final int splitElemWidth = getOffsetWidth(splitElem);
// This represents an invalid state where layout is incomplete. This
// typically happens before DOM attachment, but I leave it here as a
// precaution because negative width/height style attributes produce
// errors on IE.
if (rootElemWidth < splitElemWidth) {
return;
}
// Compute the new right side width.
int newRightWidth = rootElemWidth - px - splitElemWidth;
// Constrain the dragging to the physical size of the panel.
if (px < 0) {
px = 0;
newRightWidth = rootElemWidth - splitElemWidth;
} else if (newRightWidth < 0) {
px = rootElemWidth - splitElemWidth;
newRightWidth = 0;
}
final Element rightElem = panel.getElement(RIGHT);
// Set the width of the left side.
setWidth(panel.getElement(LEFT), px + "px");
// Move the splitter to the right edge of the left element.
setLeft(splitElem, px + "px");
// Move the right element to the right of the splitter.
setLeft(rightElem, (px + splitElemWidth) + "px");
updateRightWidth(rightElem, newRightWidth);
}
@Override
public void init(HorizontalSplitPanel panel) {
this.panel = panel;
final Element elem = panel.getElement();
// Prevents inherited text-align settings from interfering with the
// panel's layout. The setting we choose must be bidi-sensitive,
// as left-alignment is the default with LTR directionality, and
// right-alignment is the default with RTL directionality.
if (LocaleInfo.getCurrentLocale().isRTL()) {
elem.getStyle().setTextAlign(TextAlign.RIGHT);
} else {
elem.getStyle().setTextAlign(TextAlign.LEFT);
}
DOM.setStyleAttribute(elem, "position", "relative");
/*
* Technically, these are snapped to the top and bottom, but IE doesn't
* provide a reliable way to make that happen, so a resize listener is
* wired up to control the height of these elements.
*/
addAbsolutePositoning(panel.getElement(LEFT));
addAbsolutePositoning(panel.getElement(RIGHT));
addAbsolutePositoning(panel.getSplitElement());
expandToFitParentUsingPercentages(panel.container);
if (LocaleInfo.getCurrentLocale().isRTL()) {
// Snap the left pane to the left edge of the container. We
// only need to do this when layout is RTL; if we don't, the
// left pane will overlap the right pane.
setLeft(panel.getElement(LEFT), "0px");
}
}
public void setSplitPosition(String pos) {
final Element leftElem = panel.getElement(LEFT);
setWidth(leftElem, pos);
setSplitPositionUsingPixels(getOffsetWidth(leftElem));
}