Saturday, November 15, 2014

JavaScript text selection popover

Those who have read some articles on Medium.com are aware of how they can select text anywhere on a page and share it on Twitter or write a short comment about the selected text right on that page.

That's a nice popover to have, if the requirement is to select the text and show some information related to it on the same spot. I thought of posting a simple demo of it here, so that others can use it.

Here's the code 

HTML:
    
Having been in the field, most recently in India, I have seen that access to safe water is just a few dollars away for many people. A small loan can create a pathway to a household water tap. Making access to capital ubiquitous and affordable for those living in poverty would go a long way towards eliminating water stress.
CSS:
::selection{
  background: SeaGreen;
  color: White;
}
::-moz-selection{
  background: SeaGreen;
  color: White;
}
#textDescription{
  line-height:1.9em; font-size:16px; margin:10px; border:1px #333 solid; padding:5px; width: 450px;
 }
 .selectedText{
  position: relative;
  background-color: SeaGreen; color:#fff; line-height: 1.2em;
 } 
 .popDiv{
  background: ForestGreen; color: white; padding: 6px; width: 180px; height: 80px;  
  position: absolute; top: 18px; left: 0;
  border-radius: 4px; box-shadow: 2px 3px 4px #444;

  -webkit-animation: slideIn .5s;
  animation: slideIn .5s;
 }

 @-webkit-keyframes slideIn{
  from{
   top: 8px; opacity: 0; height: 40px;
  }
  to{
   top: 18px; opacity: 1; height: 80px;
  }
 }

 @-moz-keyframes slideIn{
  from{
   top: 8px; opacity: 0; height: 40px;
  }
  to{
   top: 18px; opacity: 1; height: 80px;
  }
 }

 @keyframes slideIn{
  from{
   top: 8px; opacity: 0; height: 40px;
  }
  to{
   top: 18px; opacity: 1; height: 80px;
  }
 }
JavaScript / jQuery:
 


 var parentContainerId = "textDescription"
  
 if(!window.CurrentSelection){
  CurrentSelection = {}
 }
 
 CurrentSelection.Selector = {}
 
 //get the current selection
 CurrentSelection.Selector.getSelected = function(){
  var sel = '';
  if(window.getSelection){
   sel = window.getSelection()
  }
  else if(document.getSelection){
   sel = document.getSelection()
  }
  else if(document.selection){
   sel = document.selection.createRange()
  }
  return sel
 }
 //function to be called on mouseup
 CurrentSelection.Selector.mouseup = function(){
  
  var st = CurrentSelection.Selector.getSelected()
  if(document.selection && !window.getSelection){
    var range = st
    range.pasteHTML("" + range.htmlText + "");   
  }
  else{
    var range = st.getRangeAt(0)    
    var newNode = document.createElement("span");
    newNode.setAttribute("class", "selectedText");
    range.surroundContents(newNode);
    //
    var getTitle = newNode.innerHTML;
    newNode.setAttribute("title", getTitle);

    //
    var popDiv = document.createElement('span');
    popDiv.setAttribute('class', 'popDiv');
    popDiv.innerHTML = getTitle;

    if(newNode.innerHTML.length > 0) {
     newNode.appendChild(popDiv);
    }     
    //Remove Selection: To avoid extra text selection in IE  
    if (window.getSelection) {
      window.getSelection().removeAllRanges();
    }
        else if (document.selection){ 
         document.selection.empty();
        }
        //
  }
 }
        
 $(function(){

  $("#"+parentContainerId).on('mouseup', function(){
    $('span.selectedText').contents().unwrap();
    $(this).find('span.popDiv').remove();
  });

  $("#"+parentContainerId).bind("mouseup",CurrentSelection.Selector.mouseup); 
 })        


Demo: http://jsfiddle.net/dipaks2011/uz0gsu8a/1/



Related Posts:

jQuery tab navigation:
http://dipaksblogonline.blogspot.in/2012/03/simple-jquery-tab-navigation.html

Defer third party scripts:
http://dipaksblogonline.blogspot.in/2012/06/defer-third-party-scriptsads-until.html

Using multiple iScrolls in one page:
http://dipaksblogonline.blogspot.in/2013/06/using-multiple-iscroll-in-one-page.html