Suggested case list:
Using timer to refresh a grid
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1TonyQ114.25.109.94d0n3krApr 21, 2012 10:43:27 AMlinkUsing timer to refresh a grid
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1guest64.233.172.2173stoqi4Feb 16, 2016 6:20:08 PMlinkresources
index.zulzul<zk>
<!-- ----------------------------------------------------- -->
<!-- fix it by override javascript function at client side -->
<!-- ----------------------------------------------------- -->
<script><![CDATA[
zk.afterLoad("zul.menu", function () {
var _Mppwgt = {};
zk.override(zul.menu.Menupopup.prototype, _Mppwgt, {
open: function (ref, offset, position, opts) {
if (!this._alreadyOpenOnce) {
storeOpenInfo(this, ref, offset, position, opts);
}
_Mppwgt.open.apply(this, arguments);
fixPopupOffset(this);
},
close: function () {
_Mppwgt.close.apply(this, arguments); //call the original method
// clear the 'startToLeft' flag
clearFixPopupOffset(this);
},
onChildAdded_: function (child) {
_Mppwgt.onChildAdded_.apply(this, arguments);
fixOpenPosition(this);
}
});
function fixPopupOffset (wgt) {
// find the closest parent menupopup
var p = findParentPopup(wgt);
if (p) {
// check whether overlapped or is start to extends to left side
if (isOverlap(wgt, p) || p.startToLeft) {
var n = wgt.$n();
wgt.startToLeft = true;
// fix the offset position
n.style.left = (jq(p.$n()).offset().left - jq(n).outerWidth(true) + 3) + 'px';
}
}
}
function clearFixPopupOffset (wgt) {
wgt.startToLeft = null;
}
function storeOpenInfo (wgt, ref, offset, position, opts) {
// store the arguments while first open
var oldOpenArgs = [];
oldOpenArgs.push(ref);
oldOpenArgs.push(offset);
oldOpenArgs.push(position);
oldOpenArgs.push(opts);
wgt._oldOpenArgs = oldOpenArgs;
wgt._needReopenOnce = true;
wgt._alreadyOpenOnce = true;
}
function fixOpenPosition (wgt) {
var timer,
args;
// reopen as need
if (wgt.isOpen()
&& wgt._needReopenOnce
&& (args = wgt._oldOpenArgs)) {
timer = wgt._reopenTimer;
if (timer) // clear old timer if add more than one child
clearTimeout(timer);
wgt._reopenTimer = timer = setTimeout(function () {
wgt.close();
wgt.open.apply(wgt, args);
clearTimeout(timer);
// clear all parameters
wgt._needReopenOnce = wgt._oldOpenArgs = wgt._reopenTimer = null;
}, 100);
}
}
function findParentPopup(pp) {
var p = pp.parent;
while(p && !p.$instanceof(zul.menu.Menupopup))
p = p.parent;
return p;
}
function isOverlap (child, parent) {
var $nc = jq(child.$n()),
$np = jq(parent.$n());
return ($nc.offset().left - $np.offset().left - $np.outerWidth(true)) < -10;
}
});
]]></script>
<!-- --------------------------------------------------- -->
<!-- fix finished, the fragment below is the test sample -->
<!-- --------------------------------------------------- -->
<zscript><![CDATA[
import org.zkoss.zul.*;
Menupopup mpp;
void showMenuPopup(Window win) {
if (mpp == null) {
mpp = new Menupopup();
mpp.setParent(win);
mpp.open(win);
Menuitem mi = new Menuitem();
mi.setLabel("t");
mi.setParent(mpp);
timer.start();
} else {
mpp.open(win);
}
}
void doTimer() {
System.out.println(" do timer");
Menuitem mi = new Menuitem();
mi.setImage("http://www.zkoss.org/zksandbox/img/castle.png");
mi.setLabel("New long long long long text");
mi.setParent(mpp);
Menu menu = new Menu();
menu.setLabel("About");
menu.setParent(mpp);
childMpp.setParent(menu);
}
]]></zscript>
<div width="3000px">
<hbox>
<div width="1100px">
click on the window right side to test
</div>
<window border="normal" context="mpp" title="test win" width="500px" onClick="showMenuPopup(self);" />
<timer id="timer" running="false" delay="200" onTimer="doTimer()" />
<menupopup id="childMpp">
<menu label="About">
<menupopup>
<menu label="About">
<menupopup>
<menuitem label="About ZK"
onClick="alert(self.label)" />
<menuitem label="About Potix"
onClick="alert(self.label)" />
</menupopup>
</menu>
<menuitem label="About ZK"
onClick="alert(self.label)" />
<menuitem label="About Potix"
onClick="alert(self.label)" />
</menupopup>
</menu>
<menuitem label="About ZK"
onClick="alert(self.label)" />
<menuitem label="About Potix"
onClick="alert(self.label)" />
</menupopup>
</hbox>
</div>
</zk>