Remove legacy IE support

src/ol/dom/dom.js

@@ -29,15 +29,6 @@ ol.dom.createCanvasContext2D = function(opt_width, opt_height) {
 };
 
 
-/**
- * @enum {boolean}
- */
-ol.dom.BrowserFeature = {
-  USE_MS_MATRIX_TRANSFORM: ol.LEGACY_IE_SUPPORT && ol.IS_LEGACY_IE,
-  USE_MS_ALPHA_FILTER: ol.LEGACY_IE_SUPPORT && ol.IS_LEGACY_IE
-};
-
-
 /**
  * Detect 2d transform.
  * Adapted from http://stackoverflow.com/q/5661671/130442
@@ -137,87 +128,18 @@ ol.dom.setTransform = function(element, value) {
   style.transform = value;
 
   // IE 9+ seems to assume transform-origin: 100% 100%; for some unknown reason
-  if (goog.userAgent.IE && !ol.IS_LEGACY_IE) {
+  if (goog.userAgent.IE && goog.userAgent.isVersionOrHigher('9.0')) {
     element.style.transformOrigin = '0 0';
   }
 };
 
 
-/**
- * Sets the opacity of an element, in an IE-compatible way
- * @param {!Element} element Element
- * @param {number} value Opacity, [0..1]
- */
-ol.dom.setOpacity = function(element, value) {
-  if (ol.dom.BrowserFeature.USE_MS_ALPHA_FILTER) {
-    /** @type {string} */
-    var filter = element.currentStyle.filter;
-
-    /** @type {RegExp} */
-    var regex;
-
-    /** @type {string} */
-    var alpha;
-
-    if (goog.userAgent.VERSION == '8.0') {
-      regex = /progid:DXImageTransform\.Microsoft\.Alpha\(.*?\)/i;
-      alpha = 'progid:DXImageTransform.Microsoft.Alpha(Opacity=' +
-          (value * 100) + ')';
-    } else {
-      regex = /alpha\(.*?\)/i;
-      alpha = 'alpha(opacity=' + (value * 100) + ')';
-    }
-
-    var newFilter = filter.replace(regex, alpha);
-    if (newFilter === filter) {
-      // no replace was made? just append the new alpha filter instead
-      newFilter += ' ' + alpha;
-    }
-
-    element.style.filter = newFilter;
-
-    // Fix to apply filter to absolutely-positioned children element
-    if (element.currentStyle.zIndex === 'auto') {
-      element.style.zIndex = 0;
-    }
-  } else {
-    element.style.opacity = value;
-  }
-};
-
-
-/**
- * Sets the IE matrix transform without replacing other filters
- * @private
- * @param {!Element} element Element
- * @param {string} value The new progid string
- */
-ol.dom.setIEMatrix_ = function(element, value) {
-  var filter = element.currentStyle.filter;
-  var newFilter =
-      filter.replace(/progid:DXImageTransform.Microsoft.Matrix\(.*?\)/i, value);
-
-  if (newFilter === filter) {
-    newFilter = ' ' + value;
-  }
-
-  element.style.filter = newFilter;
-
-  // Fix to apply filter to absolutely-positioned children element
-  if (element.currentStyle.zIndex === 'auto') {
-    element.style.zIndex = 0;
-  }
-};
-
-
 /**
  * @param {!Element} element Element.
  * @param {goog.vec.Mat4.Number} transform Matrix.
  * @param {number=} opt_precision Precision.
- * @param {Element=} opt_translationElement Required for IE7-8
  */
-ol.dom.transformElement2D =
-    function(element, transform, opt_precision, opt_translationElement) {
+ol.dom.transformElement2D = function(element, transform, opt_precision) {
   // using matrix() causes gaps in Chrome and Firefox on Mac OS X, so prefer
   // matrix3d()
   var i;
@@ -257,38 +179,6 @@ ol.dom.transformElement2D =
       value2D = transform2D.join(',');
     }
     ol.dom.setTransform(element, 'matrix(' + value2D + ')');
-  } else if (ol.dom.BrowserFeature.USE_MS_MATRIX_TRANSFORM) {
-    var m11 = goog.vec.Mat4.getElement(transform, 0, 0),
-        m12 = goog.vec.Mat4.getElement(transform, 0, 1),
-        m21 = goog.vec.Mat4.getElement(transform, 1, 0),
-        m22 = goog.vec.Mat4.getElement(transform, 1, 1),
-        dx = goog.vec.Mat4.getElement(transform, 0, 3),
-        dy = goog.vec.Mat4.getElement(transform, 1, 3);
-
-    // See: http://msdn.microsoft.com/en-us/library/ms533014(v=vs.85).aspx
-    // and: http://extremelysatisfactorytotalitarianism.com/blog/?p=1002
-    // @TODO: fix terrible IE bbox rotation issue.
-    var s = 'progid:DXImageTransform.Microsoft.Matrix(';
-    s += 'sizingMethod="auto expand"';
-    s += ',M11=' + m11.toFixed(opt_precision || 20);
-    s += ',M12=' + m12.toFixed(opt_precision || 20);
-    s += ',M21=' + m21.toFixed(opt_precision || 20);
-    s += ',M22=' + m22.toFixed(opt_precision || 20);
-    s += ')';
-    ol.dom.setIEMatrix_(element, s);
-
-    // scale = m11 = m22 = target resolution [m/px] / current res [m/px]
-    // dx = (viewport width [px] / 2) * scale
-    //      + (layer.x [m] - view.x [m]) / target resolution [m / px]
-    // except that we're positioning the child element relative to the
-    // viewport, not the map.
-    // dividing by the scale factor isn't the exact correction, but it's
-    // close enough that you can barely tell unless you're looking for it
-    dx /= m11;
-    dy /= m22;
-
-    opt_translationElement.style.left = Math.round(dx) + 'px';
-    opt_translationElement.style.top = Math.round(dy) + 'px';
   } else {
     element.style.left =
         Math.round(goog.vec.Mat4.getElement(transform, 0, 3)) + 'px';