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egroupware_official/phpgwapi/js/wz_tooltip/tip_centerwindow.js

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/*
tip_centerwindow.js v. 1.21
The latest version is available at
http://www.walterzorn.com
or http://www.devira.com
or http://www.walterzorn.de
Initial author: Walter Zorn
Last modified: 3.6.2008
Extension for the tooltip library wz_tooltip.js.
Centers a sticky tooltip in the window's visible clientarea,
optionally even if the window is being scrolled or resized.
*/
// Make sure that the core file wz_tooltip.js is included first
if(typeof config == "undefined")
alert("Error:\nThe core tooltip script file 'wz_tooltip.js' must be included first, before the plugin files!");
// Here we define new global configuration variable(s) (as members of the
// predefined "config." class).
// From each of these config variables, wz_tooltip.js will automatically derive
// a command which can be passed to Tip() or TagToTip() in order to customize
// tooltips individually. These command names are just the config variable
// name(s) translated to uppercase,
// e.g. from config. CenterWindow a command CENTERWINDOW will automatically be
// created.
//=================== GLOBAL TOOLTIP CONFIGURATION =========================//
config. CenterWindow = false // true or false - set to true if you want this to be the default behaviour
config. CenterAlways = false // true or false - recenter if window is resized or scrolled
//======= END OF TOOLTIP CONFIG, DO NOT CHANGE ANYTHING BELOW ==============//
// Create a new tt_Extension object (make sure that the name of that object,
// here ctrwnd, is unique amongst the extensions available for
// wz_tooltips.js):
var ctrwnd = new tt_Extension();
// Implement extension eventhandlers on which our extension should react
ctrwnd.OnLoadConfig = function()
{
if(tt_aV[CENTERWINDOW])
{
// Permit CENTERWINDOW only if the tooltip is sticky
if(tt_aV[STICKY])
{
if(tt_aV[CENTERALWAYS])
{
// IE doesn't support style.position "fixed"
if(tt_ie)
tt_AddEvtFnc(window, "scroll", Ctrwnd_DoCenter);
else
tt_aElt[0].style.position = "fixed";
tt_AddEvtFnc(window, "resize", Ctrwnd_DoCenter);
}
return true;
}
tt_aV[CENTERWINDOW] = false;
}
return false;
};
// We react on the first OnMouseMove event to center the tip on that occasion
ctrwnd.OnMoveBefore = Ctrwnd_DoCenter;
ctrwnd.OnKill = function()
{
if(tt_aV[CENTERWINDOW] && tt_aV[CENTERALWAYS])
{
tt_RemEvtFnc(window, "resize", Ctrwnd_DoCenter);
if(tt_ie)
tt_RemEvtFnc(window, "scroll", Ctrwnd_DoCenter);
else
tt_aElt[0].style.position = "absolute";
}
return false;
};
// Helper function
function Ctrwnd_DoCenter()
{
if(tt_aV[CENTERWINDOW])
{
var x, y, dx, dy;
// Here we use some functions and variables (tt_w, tt_h) which the
// extension API of wz_tooltip.js provides for us
if(tt_ie || !tt_aV[CENTERALWAYS])
{
dx = tt_GetScrollX();
dy = tt_GetScrollY();
}
else
{
dx = 0;
dy = 0;
}
// Position the tip, offset from the center by OFFSETX and OFFSETY
x = (tt_GetClientW() - tt_w) / 2 + dx + tt_aV[OFFSETX];
y = (tt_GetClientH() - tt_h) / 2 + dy + tt_aV[OFFSETY];
tt_SetTipPos(x, y);
return true;
}
return false;
}