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89 lines
2.6 KiB
JavaScript
89 lines
2.6 KiB
JavaScript
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/*
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tip_followscroll.js v. 1.11
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The latest version is available at
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http://www.walterzorn.com
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or http://www.devira.com
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or http://www.walterzorn.de
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Initial author: Walter Zorn
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Last modified: 3.6.2008
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Extension for the tooltip library wz_tooltip.js.
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Lets a "sticky" tooltip keep its position inside the clientarea if the window
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is scrolled.
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*/
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// Make sure that the core file wz_tooltip.js is included first
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if(typeof config == "undefined")
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alert("Error:\nThe core tooltip script file 'wz_tooltip.js' must be included first, before the plugin files!");
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// Here we define new global configuration variable(s) (as members of the
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// predefined "config." class).
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// From each of these config variables, wz_tooltip.js will automatically derive
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// a command which can be passed to Tip() or TagToTip() in order to customize
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// tooltips individually. These command names are just the config variable
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// name(s) translated to uppercase,
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// e.g. from config. FollowScroll a command FOLLOWSCROLL will automatically be
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// created.
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//=================== GLOBAL TOOLTIP CONFIGURATION ======================//
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config. FollowScroll = false // true or false - set to true if you want this to be the default behaviour
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//======= END OF TOOLTIP CONFIG, DO NOT CHANGE ANYTHING BELOW ==============//
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// Create a new tt_Extension object (make sure that the name of that object,
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// here fscrl, is unique amongst the extensions available for
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// wz_tooltips.js):
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var fscrl = new tt_Extension();
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// Implement extension eventhandlers on which our extension should react
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fscrl.OnShow = function()
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{
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if(tt_aV[FOLLOWSCROLL])
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{
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// Permit FOLLOWSCROLL only if the tooltip is sticky
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if(tt_aV[STICKY])
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{
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var x = tt_x - tt_GetScrollX(), y = tt_y - tt_GetScrollY();
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if(tt_ie)
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{
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fscrl.MoveOnScrl.offX = x;
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fscrl.MoveOnScrl.offY = y;
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fscrl.AddRemEvtFncs(tt_AddEvtFnc);
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}
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else
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{
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tt_SetTipPos(x, y);
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tt_aElt[0].style.position = "fixed";
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}
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return true;
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}
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tt_aV[FOLLOWSCROLL] = false;
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}
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return false;
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};
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fscrl.OnHide = function()
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{
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if(tt_aV[FOLLOWSCROLL])
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{
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if(tt_ie)
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fscrl.AddRemEvtFncs(tt_RemEvtFnc);
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else
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tt_aElt[0].style.position = "absolute";
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}
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};
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// Helper functions (encapsulate in the class to avoid conflicts with other
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// extensions)
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fscrl.MoveOnScrl = function()
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{
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tt_SetTipPos(fscrl.MoveOnScrl.offX + tt_GetScrollX(), fscrl.MoveOnScrl.offY + tt_GetScrollY());
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};
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fscrl.AddRemEvtFncs = function(PAddRem)
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{
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PAddRem(window, "resize", fscrl.MoveOnScrl);
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PAddRem(window, "scroll", fscrl.MoveOnScrl);
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};
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