Merge branch 'master' into fat-9461

1 files changed, 63 insertions, 39 deletions

diff --git a/js/tooltip.js b/js/tooltip.js
index eb7875c9f..f27beacc6 100644
--- a/js/tooltip.js
+++ b/js/tooltip.js
@@ -34,14 +34,19 @@
     title: '',
     delay: 0,
     html: false,
-    container: false
+    container: false,
+    viewport: {
+      selector: 'body',
+      padding: 0
+    }
   }
 
   Tooltip.prototype.init = function (type, element, options) {
-    this.enabled  = true
-    this.type     = type
-    this.$element = $(element)
-    this.options  = this.getOptions(options)
+    this.enabled   = true
+    this.type      = type
+    this.$element  = $(element)
+    this.options   = this.getOptions(options)
+    this.$viewport = this.options.viewport && $(this.options.viewport.selector || this.options.viewport)
 
     var triggers = this.options.trigger.split(' ')
 
@@ -157,18 +162,14 @@
       var actualHeight = $tip[0].offsetHeight
 
       if (autoPlace) {
-        var $parent = this.$element.parent()
-
         var orgPlacement = placement
-        var docScroll    = document.documentElement.scrollTop
-        var parentWidth  = this.options.container == 'body' ? window.innerWidth  : $parent.outerWidth()
-        var parentHeight = this.options.container == 'body' ? window.innerHeight : $parent.outerHeight()
-        var parentLeft   = this.options.container == 'body' ? 0 : $parent.offset().left
-
-        placement = placement == 'bottom' && pos.top   + pos.height  + actualHeight - docScroll > parentHeight  ? 'top'    :
-                    placement == 'top'    && pos.top   - docScroll   - actualHeight < 0                         ? 'bottom' :
-                    placement == 'right'  && pos.right + actualWidth > parentWidth                              ? 'left'   :
-                    placement == 'left'   && pos.left  - actualWidth < parentLeft                               ? 'right'  :
+        var $parent      = this.$element.parent()
+        var parentDim    = this.getPosition($parent)
+
+        placement = placement == 'bottom' && pos.top   + pos.height       + actualHeight - parentDim.scroll > parentDim.height ? 'top'    :
+                    placement == 'top'    && pos.top   - parentDim.scroll - actualHeight < 0                                   ? 'bottom' :
+                    placement == 'right'  && pos.right + actualWidth      > parentDim.width                                    ? 'left'   :
+                    placement == 'left'   && pos.left  - actualWidth      < parentDim.left                                     ? 'right'  :
                     placement
 
         $tip
@@ -228,29 +229,20 @@
     var actualHeight = $tip[0].offsetHeight
 
     if (placement == 'top' && actualHeight != height) {
-      replace = true
       offset.top = offset.top + height - actualHeight
     }
 
-    if (/bottom|top/.test(placement)) {
-      var delta = 0
+    var delta = this.getViewportAdjustedDelta(placement, offset, actualWidth, actualHeight)
 
-      if (offset.left < 0) {
-        delta       = offset.left * -2
-        offset.left = 0
+    if (delta.left) offset.left += delta.left
+    else offset.top += delta.top
 
-        $tip.offset(offset)
-
-        actualWidth  = $tip[0].offsetWidth
-        actualHeight = $tip[0].offsetHeight
-      }
+    var arrowDelta          = delta.left ? delta.left * 2 - width + actualWidth : delta.top * 2 - height + actualHeight
+    var arrowPosition       = delta.left ? 'left'        : 'top'
+    var arrowOffsetPosition = delta.left ? 'offsetWidth' : 'offsetHeight'
 
-      this.replaceArrow(delta - width + actualWidth, actualWidth, 'left')
-    } else {
-      this.replaceArrow(actualHeight - height, actualHeight, 'top')
-    }
-
-    if (replace) $tip.offset(offset)
+    $tip.offset(offset)
+    this.replaceArrow(arrowDelta, $tip[0][arrowOffsetPosition], arrowPosition)
   }
 
   Tooltip.prototype.replaceArrow = function (delta, dimension, position) {
@@ -303,12 +295,15 @@
     return this.getTitle()
   }
 
-  Tooltip.prototype.getPosition = function () {
-    var el = this.$element[0]
-    return $.extend({}, (typeof el.getBoundingClientRect == 'function') ? el.getBoundingClientRect() : {
-      width: el.offsetWidth,
-      height: el.offsetHeight
-    }, this.$element.offset())
+  Tooltip.prototype.getPosition = function ($element) {
+    $element   = $element || this.$element
+    var el     = $element[0]
+    var isBody = el.tagName == 'BODY'
+    return $.extend({}, (typeof el.getBoundingClientRect == 'function') ? el.getBoundingClientRect() : null, {
+      scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop(),
+      width:  isBody ? $(window).width()  : $element.outerWidth(),
+      height: isBody ? $(window).height() : $element.outerHeight()
+    }, isBody ? {top: 0, left: 0} : $element.offset())
   }
 
   Tooltip.prototype.getCalculatedOffset = function (placement, pos, actualWidth, actualHeight) {
@@ -316,6 +311,35 @@
            placement == 'top'    ? { top: pos.top - actualHeight, left: pos.left + pos.width / 2 - actualWidth / 2  } :
            placement == 'left'   ? { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth } :
         /* placement == 'right' */ { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width   }
+
+  }
+
+  Tooltip.prototype.getViewportAdjustedDelta = function (placement, pos, actualWidth, actualHeight) {
+    var delta = { top: 0, left: 0 }
+    if (!this.$viewport) return delta
+
+    var viewportPadding = this.options.viewport && this.options.viewport.padding || 0
+    var viewportDimensions = this.getPosition(this.$viewport)
+
+    if (/right|left/.test(placement)) {
+      var topEdgeOffset    = pos.top - viewportPadding - viewportDimensions.scroll
+      var bottomEdgeOffset = pos.top + viewportPadding - viewportDimensions.scroll + actualHeight
+      if (topEdgeOffset < viewportDimensions.top) { // top overflow
+        delta.top = viewportDimensions.top - topEdgeOffset
+      } else if (bottomEdgeOffset > viewportDimensions.top + viewportDimensions.height) { // bottom overflow
+        delta.top = viewportDimensions.top + viewportDimensions.height - bottomEdgeOffset
+      }
+    } else {
+      var leftEdgeOffset  = pos.left - viewportPadding
+      var rightEdgeOffset = pos.left + viewportPadding + actualWidth
+      if (leftEdgeOffset < viewportDimensions.left) { // left overflow
+        delta.left = viewportDimensions.left - leftEdgeOffset
+      } else if (rightEdgeOffset > viewportDimensions.width) { // right overflow
+        delta.left = viewportDimensions.left + viewportDimensions.width - rightEdgeOffset
+      }
+    }
+
+    return delta
   }
 
   Tooltip.prototype.getTitle = function () {