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Comment:Auto-close the tooltip after a timeout, if the mouse pointer is no longer over the associated element. The auto-close timeout is elapsed (and the tooltip closed instantly) if the mouse pointer is over another element, paused (and reset) as long as the mouse pointer is over the tooltip, and cancelled (and the tooltip kept open) if the mouse pointer is moved back over the same element.
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SHA3-256: 3d5903ce0c0e6f008118c9e2cc3dba52f67d4619181243341c07012cb6c87864
User & Date: florian 2019-05-21 07:09:00
Wiki:tooltip-experiments
Context
2019-05-21
07:26
Deduplicate code, and consistently use "style.display" instead of "style.visibility" to show and hide the tooltip. check-in: e0198213 user: florian tags: tooltip-experiments
07:09
Auto-close the tooltip after a timeout, if the mouse pointer is no longer over the associated element. The auto-close timeout is elapsed (and the tooltip closed instantly) if the mouse pointer is over another element, paused (and reset) as long as the mouse pointer is over the tooltip, and cancelled (and the tooltip kept open) if the mouse pointer is moved back over the same element. check-in: 3d5903ce user: florian tags: tooltip-experiments
2019-05-20
09:45
Fix coding typos from the previous commit. check-in: b4f1eb90 user: florian tags: tooltip-experiments
Changes
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Changes to src/graph.js.

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  }
  amendCssOnce = 0;
}
var tooltipObj = document.createElement("span");
tooltipObj.className = "tl-tooltip";
tooltipObj.style.visibility = "hidden";
document.getElementsByClassName("content")[0].appendChild(tooltipObj);

















/* This object must be in the global scope, so that (non-shadowed) access is
** possible from within a setTimeout() closure. */
window.tooltipInfo = {
  dwellTimeout: 250,  /* The tooltip dwell timeout. */

  idTimer: 0,         /* The tooltip dwell timer. */
  ixElement: -1,      /* The id of the last hovered element. */



  posX: 0, posY: 0    /* The last mouse position. */
};

/* Construct that graph corresponding to the timeline-data-N object */
function TimelineGraph(tx){
  var topObj = document.getElementById("timelineTable"+tx.iTableId);
  amendCss(tx.circleNodes, tx.showArrowheads);
................................................................................
  topObj.ondblclick = dblclickOnGraph
  topObj.onmousemove = function(e) {
    var ix = findTxIndex(e);
    var cursor = (ix<0) ? "" : "pointer"; /* Or: cursor = "help"? */
    document.getElementsByTagName('body')[0].style.cursor = cursor;
    /* Keep the already visible tooltip at a constant position, as long as the
    ** mouse is over the same element. */

    if (tooltipObj.style.display != "none" && ix == tooltipInfo.ixElement)

      return;



    /* The tooltip is either not visible, or the mouse is over a different
    ** element, so clear the dwell timer, and record the new element id and
    ** mouse position. */
    if (tooltipInfo.idTimer != 0) {
      clearTimeout(tooltipInfo.idTimer);
      tooltipInfo.idTimer = 0;
    }
    if (ix >= 0) {
      /* Close the tooltip only if the mouse is over another element, and init
      ** the dwell timer again. */


      tooltipObj.style.display = "none";

      tooltipInfo.ixElement = ix;
      tooltipInfo.posX = e.x;
      tooltipInfo.posY = e.y;






      tooltipInfo.idTimer = setTimeout(function() {
        this.tooltipInfo.idTimer = 0;





        showGraphTooltip(
          this.tooltipInfo.ixElement,
          this.tooltipInfo.posX,
          this.tooltipInfo.posY);

      }.bind(window),tooltipInfo.dwellTimeout);
    }

    else
      tooltipInfo.ixElement = -1;










  };
  topObj.onmouseleave = function(e) {
    /* Hide the tooltip if the mouse is outside the "timelineTableN" element,
    ** and outside the tooltip. */
    if (tooltipObj.style.display != "none" &&
          e.relatedTarget &&
          e.relatedTarget != tooltipObj) {


      tooltipObj.style.display = "none";
      /* Clear the dwell timer. */
      if (tooltipInfo.idTimer != 0) {
        clearTimeout(tooltipInfo.idTimer);
        tooltipInfo.idTimer = 0;
      }



      tooltipInfo.ixElement = -1;

    }
  };
  var canvasDiv;
  var railPitch;
  var mergeOffset;
  var node, arrow, arrowSmall, line, mArrow, mLine, wArrow, wLine;








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  }
  amendCssOnce = 0;
}
var tooltipObj = document.createElement("span");
tooltipObj.className = "tl-tooltip";
tooltipObj.style.visibility = "hidden";
document.getElementsByClassName("content")[0].appendChild(tooltipObj);
/* Clear the close timer if the mouse is over the tooltip. */
tooltipObj.onmouseenter = function(e) {
  if (tooltipInfo.idTimerClose != 0) {
    clearTimeout(tooltipInfo.idTimerClose);
    tooltipInfo.idTimerClose = 0;
  }
};
/* Init the close timer if the mouse is no longer over the tooltip. */
tooltipObj.onmouseleave = function(e) {
  if (tooltipInfo.ixActive != -1 && tooltipInfo.idTimerClose == 0) {
    tooltipInfo.idTimerClose = setTimeout(function() {
      tooltipInfo.idTimerClose = 0;
      tooltipInfo.ixActive = -1;
      tooltipObj.style.display = "none";
    }.bind(window),tooltipInfo.closeTimeout);
  }
};
/* This object must be in the global scope, so that (non-shadowed) access is
** possible from within a setTimeout() closure. */
window.tooltipInfo = {
  dwellTimeout: 250,  /* The tooltip dwell timeout. */
  closeTimeout: 3000, /* The tooltip close timeout. */
  idTimer: 0,         /* The tooltip dwell timer id. */

  idTimerClose: 0,    /* The tooltip close timer id. */
  ixHover: -1,        /* The id of the element with the mouse. */
  ixActive: -1,       /* The id of the element with the tooltip. */
  posX: 0, posY: 0    /* The last mouse position. */
};

/* Construct that graph corresponding to the timeline-data-N object */
function TimelineGraph(tx){
  var topObj = document.getElementById("timelineTable"+tx.iTableId);
  amendCss(tx.circleNodes, tx.showArrowheads);
................................................................................
  topObj.ondblclick = dblclickOnGraph
  topObj.onmousemove = function(e) {
    var ix = findTxIndex(e);
    var cursor = (ix<0) ? "" : "pointer"; /* Or: cursor = "help"? */
    document.getElementsByTagName('body')[0].style.cursor = cursor;
    /* Keep the already visible tooltip at a constant position, as long as the
    ** mouse is over the same element. */
    var isReentry = false;  // Detect mouse move back to same element.
    if (tooltipObj.style.display != "none") {
      if (ix == tooltipInfo.ixHover)
        return;
      if (-1 == tooltipInfo.ixHover && ix == tooltipInfo.ixActive)
        isReentry = true;
    }
    /* The tooltip is either not visible, or the mouse is over a different
    ** element, so clear the dwell timer, and record the new element id and
    ** mouse position. */
    if (tooltipInfo.idTimer != 0) {
      clearTimeout(tooltipInfo.idTimer);
      tooltipInfo.idTimer = 0;
    }
    if (ix >= 0) {
      /* Close the tooltip only if the mouse is over another element, and init
      ** the dwell timer again. */
      if (!isReentry) {
        tooltipInfo.ixActive = -1;
        tooltipObj.style.display = "none";
      }
      tooltipInfo.ixHover = ix;
      tooltipInfo.posX = e.x;
      tooltipInfo.posY = e.y;
      /* Clear the close timer. */
      if (tooltipInfo.idTimerClose != 0) {
        clearTimeout(tooltipInfo.idTimerClose);
        tooltipInfo.idTimerClose = 0;
      }
      if (!isReentry) {
        tooltipInfo.idTimer = setTimeout(function() {
          this.tooltipInfo.idTimer = 0;
          /* Clear the timer to hide the tooltip. */
          if (this.tooltipInfo.idTimerClose != 0) {
            clearTimeout(this.tooltipInfo.idTimerClose);
            this.tooltipInfo.idTimerClose = 0;
          }
          showGraphTooltip(
            this.tooltipInfo.ixHover,
            this.tooltipInfo.posX,
            this.tooltipInfo.posY);
          this.tooltipInfo.ixActive = this.tooltipInfo.ixHover;
        }.bind(window),tooltipInfo.dwellTimeout);
      }
    }
    else {
      tooltipInfo.ixHover = -1;
      /* The mouse is not over an element with a tooltip, init the hide
      ** timer. */
      if (tooltipInfo.idTimerClose == 0) {
        tooltipInfo.idTimerClose = setTimeout(function() {
          this.tooltipInfo.idTimerClose = 0;
          this.tooltipInfo.ixActive = -1;
          tooltipObj.style.display = "none";
        }.bind(window),tooltipInfo.closeTimeout);
      }
    }
  };
  topObj.onmouseleave = function(e) {
    /* Hide the tooltip if the mouse is outside the "timelineTableN" element,
    ** and outside the tooltip. */
    if (tooltipObj.style.display != "none" &&
          e.relatedTarget &&
          e.relatedTarget != tooltipObj) {
      tooltipInfo.ixHover = -1;
      tooltipInfo.ixActive = -1;
      tooltipObj.style.display = "none";
      /* Clear the dwell timer. */
      if (tooltipInfo.idTimer != 0) {
        clearTimeout(tooltipInfo.idTimer);
        tooltipInfo.idTimer = 0;
      }
      /* Clear the close timer. */
      if (tooltipInfo.idTimerClose != 0) {
        clearTimeout(tooltipInfo.idTimerClose);
        tooltipInfo.idTimerClose = 0;
      }
    }
  };
  var canvasDiv;
  var railPitch;
  var mergeOffset;
  var node, arrow, arrowSmall, line, mArrow, mLine, wArrow, wLine;