view release on metacpan or  search on metacpan

htdocs/js/balloon.js  view on Meta::CPAN

    window.clearTimeout(self.timeoutTooltip);
    window.clearTimeout(self.timeoutFade);
    window.clearTimeout(self.timeoutAutoClose);
    if (balloonIsSticky) {
      self.currentElement = null;
    }
    self.startX = 0;
    self.startY = 0;
  }

  balloonIsVisible = false;
  balloonIsSticky  = false;
}

// Garbage collection
Balloon.prototype.cleanup = function() {
  var self = currentBalloonClass;
  var body;
  if (self) {
    body = self.parent   ? self.parent 
         : self.parentID ? $(self.parentID) || document.body
         : document.body;
  }
  else {
    body = document.body;
  }
  
  var bubble = $('balloon');
  var close  = $('closeButton');
  var cont   = $('container');
  if (bubble) { body.removeChild(bubble) } 
  if (close)  { body.removeChild(close)  }
  if (cont)   { body.removeChild(cont)   }
}


// this function is meant to be called externally to clear
// any open balloons
hideAllTooltips = function() {
  var self = currentBalloonClass;
  if (!self) return;
  window.clearTimeout(self.timeoutTooltip);
  if (self.activeBalloon) self.setStyle(self.activeBalloon,'display','none');
  balloonIsVisible    = false;
  balloonIsSticky     = false;
  currentBalloonClass = null;
}


// Track the active mouseover coordinates
Balloon.prototype.setActiveCoordinates = function(evt) {
  var self = currentBalloonClass;
  if (!self) {
    return true;
  }
  var evt = evt || window.event || self.currentEvent;
  if (!evt) {
    return true;
  }

  // avoid silent NaN errors
  self.hOffset = self.hOffset || 1;
  self.vOffset = self.vOffset || 1;
  self.stemHeight = self.stem && self.stemHeight ? (self.stemHeight|| 0) : 0;

  var scrollTop  = 0;
  var scrollLeft = 0;

  var XY = self.eventXY(evt);
  adjustment   = self.hOffset < 20 ? 10 : 0;
  self.activeTop    = scrollTop  + XY[1] - adjustment - self.vOffset - self.stemHeight;
  self.activeLeft   = scrollLeft + XY[0] - adjustment - self.hOffset;
  self.activeRight  = scrollLeft + XY[0];
  self.activeBottom = scrollTop  + XY[1] + self.vOffset + 2*adjustment;

  // dynamic positioning but only if the balloon is not sticky
  // and cursor tracking is enabled
  if (balloonIsVisible && !balloonIsSticky && self.trackCursor) {
    var deltaX = Math.abs(self.activeLeft - self.startX);
    var deltaY = Math.abs(self.activeTop - self.startY);

    if (deltaX > self.stopTrackingX || deltaY > self.stopTrackingY) {
	self.hideTooltip();
    }
    else {
	self.adjustBalloonPosition();
    }
  }

  return true;
}

Balloon.prototype.adjustBalloonPosition = function() {
      var self = currentBalloonClass;
      var b = self.activeBalloon;
      var bwidth  = self.getLoc(b,'width');
      var bheight = self.getLoc(b,'height');
      var btop    = self.getLoc(b,'y1');
      var bleft   = self.getLoc(b,'x1');

      if (self.hOrient == 'right') {
        self.setStyle(b,'left',self.activeRight);
      }
      else if (self.hOrient == 'left') {
        self.setStyle(b,'right',null);
        var newLeft = self.activeLeft - bwidth;
        self.setStyle(b,'left',newLeft);
      }

      if (self.vOrient == 'up') {
        self.setStyle(b,'top',self.activeTop - bheight);
      }
      else if (self.vOrient == 'down') {
        self.setStyle(b,'top',self.activeBottom);
      }
}

////
// event XY and getEventTarget Functions based on examples by Peter-Paul
// Koch http://www.quirksmode.org/js/events_properties.html
Balloon.prototype.eventXY = function(event) {