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-rw-r--r--vendor/assets/javascripts/coordinates.js94
-rw-r--r--vendor/assets/javascripts/drag.js229
-rw-r--r--vendor/assets/javascripts/dragsort.js234
3 files changed, 557 insertions, 0 deletions
diff --git a/vendor/assets/javascripts/coordinates.js b/vendor/assets/javascripts/coordinates.js
new file mode 100644
index 0000000..e2f5bf2
--- /dev/null
+++ b/vendor/assets/javascripts/coordinates.js
@@ -0,0 +1,94 @@
+var Coordinates = {
+ ORIGIN : new Coordinate(0, 0),
+
+ northwestPosition : function(element) {
+ var x = parseInt(element.style.left);
+ var y = parseInt(element.style.top);
+
+ return new Coordinate(isNaN(x) ? 0 : x, isNaN(y) ? 0 : y);
+ },
+
+ southeastPosition : function(element) {
+ return Coordinates.northwestPosition(element).plus(
+ new Coordinate(element.offsetWidth, element.offsetHeight));
+ },
+
+ northwestOffset : function(element, isRecursive) {
+ var offset = new Coordinate(element.offsetLeft, element.offsetTop);
+
+ if (!isRecursive) return offset;
+
+ var parent = element.offsetParent;
+ while (parent) {
+ offset = offset.plus(
+ new Coordinate(parent.offsetLeft, parent.offsetTop));
+ parent = parent.offsetParent;
+ }
+ return offset;
+ },
+
+ southeastOffset : function(element, isRecursive) {
+ return Coordinates.northwestOffset(element, isRecursive).plus(
+ new Coordinate(element.offsetWidth, element.offsetHeight));
+ },
+
+ fixEvent : function(event) {
+ event.windowCoordinate = new Coordinate(event.clientX, event.clientY);
+ }
+};
+
+function Coordinate(x, y) {
+ this.x = x;
+ this.y = y;
+}
+
+Coordinate.prototype.toString = function() {
+ return "(" + this.x + "," + this.y + ")";
+}
+
+Coordinate.prototype.plus = function(that) {
+ return new Coordinate(this.x + that.x, this.y + that.y);
+}
+
+Coordinate.prototype.minus = function(that) {
+ return new Coordinate(this.x - that.x, this.y - that.y);
+}
+
+Coordinate.prototype.distance = function(that) {
+ var deltaX = this.x - that.x;
+ var deltaY = this.y - that.y;
+
+ return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
+}
+
+Coordinate.prototype.max = function(that) {
+ var x = Math.max(this.x, that.x);
+ var y = Math.max(this.y, that.y);
+ return new Coordinate(x, y);
+}
+
+Coordinate.prototype.constrain = function(min, max) {
+ if (min.x > max.x || min.y > max.y) return this;
+
+ var x = this.x;
+ var y = this.y;
+
+ if (min.x != null) x = Math.max(x, min.x);
+ if (max.x != null) x = Math.min(x, max.x);
+ if (min.y != null) y = Math.max(y, min.y);
+ if (max.y != null) y = Math.min(y, max.y);
+
+ return new Coordinate(x, y);
+}
+
+Coordinate.prototype.reposition = function(element) {
+ element.style["top"] = this.y + "px";
+ element.style["left"] = this.x + "px";
+}
+
+Coordinate.prototype.equals = function(that) {
+ if (this == that) return true;
+ if (!that || that == null) return false;
+
+ return this.x == that.x && this.y == that.y;
+}
diff --git a/vendor/assets/javascripts/drag.js b/vendor/assets/javascripts/drag.js
new file mode 100644
index 0000000..9ba6746
--- /dev/null
+++ b/vendor/assets/javascripts/drag.js
@@ -0,0 +1,229 @@
+/*
+ * drag.js - click & drag DOM elements
+ *
+ * originally based on Youngpup's dom-drag.js, www.youngpup.net
+ */
+
+var Drag = {
+ BIG_Z_INDEX : 10000,
+ group : null,
+ isDragging : false,
+
+ makeDraggable : function(group) {
+ group.handle = group;
+ group.handle.group = group;
+
+ group.minX = null;
+ group.minY = null;
+ group.maxX = null;
+ group.maxY = null;
+ group.threshold = 0;
+ group.thresholdY = 0;
+ group.thresholdX = 0;
+
+ group.onDragStart = new Function();
+ group.onDragEnd = new Function();
+ group.onDrag = new Function();
+
+ // TODO: use element.prototype.myFunc
+ group.setDragHandle = Drag.setDragHandle;
+ group.setDragThreshold = Drag.setDragThreshold;
+ group.setDragThresholdX = Drag.setDragThresholdX;
+ group.setDragThresholdY = Drag.setDragThresholdY;
+ group.constrain = Drag.constrain;
+ group.constrainVertical = Drag.constrainVertical;
+ group.constrainHorizontal = Drag.constrainHorizontal;
+
+ group.onmousedown = Drag.onMouseDown;
+ },
+
+ constrainVertical : function() {
+ var nwOffset = Coordinates.northwestOffset(this, true);
+ this.minX = nwOffset.x;
+ this.maxX = nwOffset.x;
+ },
+
+ constrainHorizontal : function() {
+ var nwOffset = Coordinates.northwestOffset(this, true);
+ this.minY = nwOffset.y;
+ this.maxY = nwOffset.y;
+ },
+
+ constrain : function(nwPosition, sePosition) {
+ this.minX = nwPosition.x;
+ this.minY = nwPosition.y;
+ this.maxX = sePosition.x;
+ this.maxY = sePosition.y;
+ },
+
+ setDragHandle : function(handle) {
+ if (handle && handle != null)
+ this.handle = handle;
+ else
+ this.handle = this;
+
+ this.handle.group = this;
+ this.onmousedown = null;
+ this.handle.onmousedown = Drag.onMouseDown;
+ },
+
+ setDragThreshold : function(threshold) {
+ if (isNaN(parseInt(threshold))) return;
+
+ this.threshold = threshold;
+ },
+
+ setDragThresholdX : function(threshold) {
+ if (isNaN(parseInt(threshold))) return;
+
+ this.thresholdX = threshold;
+ },
+
+ setDragThresholdY : function(threshold) {
+ if (isNaN(parseInt(threshold))) return;
+
+ this.thresholdY = threshold;
+ },
+
+ onMouseDown : function(event) {
+ event = Drag.fixEvent(event);
+ Drag.group = this.group;
+
+ var group = this.group;
+ var mouse = event.windowCoordinate;
+ var nwOffset = Coordinates.northwestOffset(group, true);
+ var nwPosition = Coordinates.northwestPosition(group);
+ var sePosition = Coordinates.southeastPosition(group);
+ var seOffset = Coordinates.southeastOffset(group, true);
+
+ group.originalOpacity = group.style.opacity;
+ group.originalZIndex = group.style.zIndex;
+ group.initialWindowCoordinate = mouse;
+ // TODO: need a better name, but don't yet understand how it
+ // participates in the magic while dragging
+ group.dragCoordinate = mouse;
+
+ Drag.showStatus(mouse, nwPosition, sePosition, nwOffset, seOffset);
+
+ group.onDragStart(nwPosition, sePosition, nwOffset, seOffset);
+
+ // TODO: need better constraint API
+ if (group.minX != null)
+ group.minMouseX = mouse.x - nwPosition.x +
+ group.minX - nwOffset.x;
+ if (group.maxX != null)
+ group.maxMouseX = group.minMouseX + group.maxX - group.minX;
+
+ if (group.minY != null)
+ group.minMouseY = mouse.y - nwPosition.y +
+ group.minY - nwOffset.y;
+ if (group.maxY != null)
+ group.maxMouseY = group.minMouseY + group.maxY - group.minY;
+
+ group.mouseMin = new Coordinate(group.minMouseX, group.minMouseY);
+ group.mouseMax = new Coordinate(group.maxMouseX, group.maxMouseY);
+
+ document.onmousemove = Drag.onMouseMove;
+ document.onmouseup = Drag.onMouseUp;
+
+ return false;
+ },
+
+ showStatus : function(mouse, nwPosition, sePosition, nwOffset, seOffset) {
+ window.status =
+ "mouse: " + mouse.toString() + " " +
+ "NW pos: " + nwPosition.toString() + " " +
+ "SE pos: " + sePosition.toString() + " " +
+ "NW offset: " + nwOffset.toString() + " " +
+ "SE offset: " + seOffset.toString();
+ },
+
+ onMouseMove : function(event) {
+ event = Drag.fixEvent(event);
+ var group = Drag.group;
+ var mouse = event.windowCoordinate;
+ var nwOffset = Coordinates.northwestOffset(group, true);
+ var nwPosition = Coordinates.northwestPosition(group);
+ var sePosition = Coordinates.southeastPosition(group);
+ var seOffset = Coordinates.southeastOffset(group, true);
+
+ Drag.showStatus(mouse, nwPosition, sePosition, nwOffset, seOffset);
+
+ if (!Drag.isDragging) {
+ if (group.threshold > 0) {
+ var distance = group.initialWindowCoordinate.distance(
+ mouse);
+ if (distance < group.threshold) return true;
+ } else if (group.thresholdY > 0) {
+ var deltaY = Math.abs(group.initialWindowCoordinate.y - mouse.y);
+ if (deltaY < group.thresholdY) return true;
+ } else if (group.thresholdX > 0) {
+ var deltaX = Math.abs(group.initialWindowCoordinate.x - mouse.x);
+ if (deltaX < group.thresholdX) return true;
+ }
+
+ Drag.isDragging = true;
+ group.style["zIndex"] = Drag.BIG_Z_INDEX;
+ group.style["opacity"] = 0.75;
+ }
+
+ // TODO: need better constraint API
+ var adjusted = mouse.constrain(group.mouseMin, group.mouseMax);
+ nwPosition = nwPosition.plus(adjusted.minus(group.dragCoordinate));
+ nwPosition.reposition(group);
+ group.dragCoordinate = adjusted;
+
+ // once dragging has started, the position of the group
+ // relative to the mouse should stay fixed. They can get out
+ // of sync if the DOM is manipulated while dragging, so we
+ // correct the error here
+ //
+ // TODO: what we really want to do is find the offset from
+ // our corner to the mouse coordinate and adjust to keep it
+ // the same
+ var offsetBefore = Coordinates.northwestOffset(group);
+ group.onDrag(nwPosition, sePosition, nwOffset, seOffset);
+ var offsetAfter = Coordinates.northwestOffset(group);
+
+ if (!offsetBefore.equals(offsetAfter)) {
+ var errorDelta = offsetBefore.minus(offsetAfter);
+ nwPosition = Coordinates.northwestPosition(group).plus(errorDelta);
+ nwPosition.reposition(group);
+ }
+
+ return false;
+ },
+
+ onMouseUp : function(event) {
+ event = Drag.fixEvent(event);
+ var group = Drag.group;
+
+ var mouse = event.windowCoordinate;
+ var nwOffset = Coordinates.northwestOffset(group, true);
+ var nwPosition = Coordinates.northwestPosition(group);
+ var sePosition = Coordinates.southeastPosition(group);
+ var seOffset = Coordinates.southeastOffset(group, true);
+
+ document.onmousemove = null;
+ document.onmouseup = null;
+ group.onDragEnd(nwPosition, sePosition, nwOffset, seOffset);
+
+ if (Drag.isDragging) {
+ // restoring zIndex before opacity avoids visual flicker in Firefox
+ group.style["zIndex"] = group.originalZIndex;
+ group.style["opacity"] = group.originalOpacity;
+ }
+
+ Drag.group = null;
+ Drag.isDragging = false;
+
+ return false;
+ },
+
+ fixEvent : function(event) {
+ if (typeof event == 'undefined') event = window.event;
+ Coordinates.fixEvent(event);
+
+ return event;
+ }
+};
diff --git a/vendor/assets/javascripts/dragsort.js b/vendor/assets/javascripts/dragsort.js
new file mode 100644
index 0000000..6356663
--- /dev/null
+++ b/vendor/assets/javascripts/dragsort.js
@@ -0,0 +1,234 @@
+// TODO: refactor away duplicationg in DragSort and DragSortX
+
+var BetterDragSort = {
+
+ makeListSortable : function(list) {
+ var items = list.getElementsByTagName("li");
+
+ for (var i = 0; i < items.length; i++) {
+ BetterDragSort.makeItemSortable(items[i]);
+ }
+ },
+
+ makeItemSortable : function(item) {
+ Drag.makeDraggable(item);
+ item.setDragThresholdY(5);
+
+ item.onDragStart = BetterDragSort.onDragStart;
+ item.onDrag = BetterDragSort.onDrag;
+ item.onDragEnd = BetterDragSort.onDragEnd;
+ },
+
+ onDragStart : function(nwPosition, sePosition, nwOffset, seOffset) {
+ var items = this.parentNode.getElementsByTagName("li");
+ var minOffset = Coordinates.northwestOffset(items[0], true);
+ var maxOffset = minOffset;
+ for (var i = 0; i < items.length; i++) {
+ maxOffset = maxOffset.max(Coordinates.northwestOffset(items[i], true));
+ }
+ this.constrain(minOffset, maxOffset);
+ },
+
+ onDrag : function(nwPosition, sePosition, nwOffset, seOffset) {
+ var swapper = null;
+
+ var next = DragUtils.nextItem(this);
+ while (next != null) {
+ var nextNWOffset = Coordinates.northwestOffset(next, true);
+ var nextSEOffset = Coordinates.southeastOffset(next, true);
+
+ if (nwOffset.y >= (nextNWOffset.y - 2) &&
+ nwOffset.y <= (nextSEOffset.y + 2) &&
+ nwOffset.x >= (nextNWOffset.x - 2) &&
+ nwOffset.x <= (nextSEOffset.x + 2)) {
+ var swapper = next;
+ break;
+ }
+ var next = DragUtils.nextItem(next);
+ }
+ if (swapper != null) {
+ BetterDragSort.moveAfter(this, swapper);
+ return;
+ }
+
+ var previous = DragUtils.previousItem(this);
+ while (previous != null) {
+ var previousNWOffset = Coordinates.northwestOffset(previous, true);
+ var previousSEOffset = Coordinates.southeastOffset(previous, true);
+
+ var fudgeFactor = 2;
+ if (nwOffset.y >= (previousNWOffset.y - fudgeFactor) &&
+ nwOffset.y <= (previousSEOffset.y + fudgeFactor) &&
+ nwOffset.x >= (previousNWOffset.x - fudgeFactor) &&
+ nwOffset.x <= (previousSEOffset.x + fudgeFactor)) {
+ var swapper = previous;
+ break;
+ }
+ var previous = DragUtils.previousItem(previous);
+ }
+ if (swapper != null) {
+ BetterDragSort.moveBefore(this, swapper);
+ return;
+ }
+ },
+
+ moveAfter : function(item1, item2) {
+ var parent = item1.parentNode;
+ parent.removeChild(item1);
+ parent.insertBefore(item1, item2.nextSibling);
+
+ item1.style["top"] = "0px";
+ item1.style["left"] = "0px";
+ },
+
+ moveBefore : function(item1, item2) {
+ var parent = item1.parentNode;
+ parent.removeChild(item1);
+ parent.insertBefore(item1, item2);
+
+ item1.style["top"] = "0px";
+ item1.style["left"] = "0px";
+ },
+
+ onDragEnd : function(nwPosition, sePosition, nwOffset, seOffset) {
+ this.style["top"] = "0px";
+ this.style["left"] = "0px";
+ }
+};
+
+
+var DragSort = {
+
+ makeListSortable : function(list) {
+ var items = list.getElementsByTagName("li");
+
+ for (var i = 0; i < items.length; i++) {
+ DragSort.makeItemSortable(items[i]);
+ }
+ },
+
+ makeItemSortable : function(item) {
+ Drag.makeDraggable(item);
+ item.setDragThresholdY(5);
+
+ item.onDragStart = DragSort.onDragStart;
+ item.onDrag = DragSort.onDrag;
+ item.onDragEnd = DragSort.onDragEnd;
+ },
+
+ onDragStart : function(nwPosition, sePosition, nwOffset, seOffset) {
+ var items = this.parentNode.getElementsByTagName("li");
+ var minOffset = Coordinates.northwestOffset(items[0], true);
+ var maxOffset = Coordinates.northwestOffset(items[items.length - 1], true);
+ this.constrain(minOffset, maxOffset);
+ },
+
+ onDrag : function(nwPosition, sePosition, nwOffset, seOffset) {
+ var parent = this.parentNode;
+
+ var item = this;
+ var next = DragUtils.nextItem(item);
+ while (next != null && this.offsetTop >= next.offsetTop - 2) {
+ var item = next;
+ var next = DragUtils.nextItem(item);
+ }
+ if (this != item) {
+ DragUtils.swap(this, next);
+ return;
+ }
+
+ var item = this;
+ var previous = DragUtils.previousItem(item);
+ while (previous != null && this.offsetTop <= previous.offsetTop + 2) {
+ var item = previous;
+ var previous = DragUtils.previousItem(item);
+ }
+ if (this != item) {
+ DragUtils.swap(this, item);
+ return;
+ }
+ },
+
+ onDragEnd : function(nwPosition, sePosition, nwOffset, seOffset) {
+ this.style["top"] = "0px";
+ this.style["left"] = "0px";
+ }
+};
+
+var DragSortX = {
+
+ makeListSortable : function(list) {
+ var items = list.getElementsByTagName("li");
+
+ var minOffset = Coordinates.northwestOffset(items[0], true);
+ var maxOffset = Coordinates.northwestOffset(items[items.length - 1], true);
+
+ for (var i = 0; i < items.length; i++) {
+ Drag.makeDraggable(items[i]);
+ items[i].constrain(minOffset, maxOffset);
+ items[i].setDragThresholdX(5);
+
+ items[i].onDrag = DragSortX.onDrag;
+
+ items[i].onDragEnd = function(nwPosition, sePosition, nwOffset, seOffset) {
+ this.style["top"] = "0px";
+ this.style["left"] = "0px";
+ };
+ }
+ },
+
+ onDrag : function(nwPosition, sePosition, nwOffset, seOffset) {
+ var parent = this.parentNode;
+
+ var item = this;
+ var next = DragUtils.nextItem(item);
+ while (next != null && this.offsetLeft >= next.offsetLeft - 2) {
+ var item = next;
+ var next = DragUtils.nextItem(item);
+ }
+ if (this != item) {
+ DragUtils.swap(this, next);
+ return;
+ }
+
+ var item = this;
+ var previous = DragUtils.previousItem(item);
+ while (previous != null && this.offsetLeft <= previous.offsetLeft + 2) {
+ var item = previous;
+ var previous = DragUtils.previousItem(item);
+ }
+ if (this != item) {
+ DragUtils.swap(this, item);
+ return;
+ }
+ }
+};
+
+var DragUtils = {
+ swap : function(item1, item2) {
+ var parent = item1.parentNode;
+ parent.removeChild(item1);
+ parent.insertBefore(item1, item2);
+
+ item1.style["top"] = "0px";
+ item1.style["left"] = "0px";
+ },
+
+ nextItem : function(item) {
+ var sibling = item.nextSibling;
+ while (sibling != null) {
+ if (sibling.nodeName == item.nodeName) return sibling;
+ sibling = sibling.nextSibling;
+ }
+ return null;
+ },
+
+ previousItem : function(item) {
+ var sibling = item.previousSibling;
+ while (sibling != null) {
+ if (sibling.nodeName == item.nodeName) return sibling;
+ sibling = sibling.previousSibling;
+ }
+ return null;
+ }
+};
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