--- loncom/interface/loncommon.pm 2007/09/07 19:51:41 1.580 +++ loncom/interface/loncommon.pm 2007/10/26 00:40:54 1.597 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # a pile of common routines # -# $Id: loncommon.pm,v 1.580 2007/09/07 19:51:41 raeburn Exp $ +# $Id: loncommon.pm,v 1.597 2007/10/26 00:40:54 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -407,7 +407,7 @@ sub coursebrowser_javascript { '&cdomelement='+udom+ '&cnameelement='+desc; if (extra_element !=null && extra_element != '') { - if (formname == 'rolechoice') { + if (formname == 'rolechoice' || formname == 'studentform') { url += '&roleelement='+extra_element; if (domainfilter == null || domainfilter == '') { url += '&domainfilter='+extra_element; @@ -1074,6 +1074,77 @@ sub changable_area { =pod +=item * viewport_geometry_js { + +Provides javascript object (Geometry) which can provide information about the viewport geometry for the client browser. + +=cut + + +sub viewport_geometry_js { + return <<"GEOMETRY"; +var Geometry = {}; +function init_geometry() { + if (Geometry.init) { return }; + Geometry.init=1; + if (window.innerHeight) { + Geometry.getViewportHeight = function() { return window.innerHeight; }; + Geometry.getViewportWidth = function() { return window.innerWidth; }; + Geometry.getHorizontalScroll = function() { return window.pageXOffset; }; + Geometry.getVerticalScroll = function() { return window.pageYOffset; }; + } + else if (document.documentElement && document.documentElement.clientHeight) { + Geometry.getViewportHeight = + function() { return document.documentElement.clientHeight; }; + Geometry.getViewportWidth = + function() { return document.documentElement.clientWidth; }; + + Geometry.getHorizontalScroll = + function() { return document.documentElement.scrollLeft; }; + Geometry.getVerticalScroll = + function() { return document.documentElement.scrollTop; }; + } + else if (document.body.clientHeight) { + Geometry.getViewportHeight = + function() { return document.body.clientHeight; }; + Geometry.getViewportWidth = + function() { return document.body.clientWidth; }; + Geometry.getHorizontalScroll = + function() { return document.body.scrollLeft; }; + Geometry.getVerticalScroll = + function() { return document.body.scrollTop; }; + } +} + +GEOMETRY +} + +=pod + +=item * viewport_size_js { + +Provides a javascript function to set values of two form elements - width and height (elements are passed in as arguments to the javascript function) to the dimensions of the user's browser window. + +=cut + +sub viewport_size_js { + my $geometry = &viewport_geometry_js(); + return <<"DIMS"; + +$geometry + +function getViewportDims(width,height) { + init_geometry(); + width.value = Geometry.getViewportWidth(); + height.value = Geometry.getViewportHeight(); + return; +} + +DIMS +} + +=pod + =item * resize_textarea_js emits the needed javascript to resize a textarea to be as big as possible @@ -1087,37 +1158,41 @@ to be attached to the for the onl =cut sub resize_textarea_js { + my $geometry = &viewport_geometry_js(); return <<"RESIZE";