Squashed 'lib/vis/' content from commit 1d029ca

git-subtree-dir: lib/vis
git-subtree-split: 1d029cab7b527f3b292e95d550efbf784dac8699

lib/timeline/component/Component.js

@@ -0,0 +1,54 @@
+/**
+ * Prototype for visual components
+ * @param {{dom: Object, domProps: Object, emitter: Emitter, range: Range}} [body]
+ * @param {Object} [options]
+ */
+function Component (body, options) {
+  this.options = null;
+  this.props = null;
+}
+
+/**
+ * Set options for the component. The new options will be merged into the
+ * current options.
+ * @param {Object} options
+ */
+Component.prototype.setOptions = function(options) {
+  if (options) {
+    util.extend(this.options, options);
+  }
+};
+
+/**
+ * Repaint the component
+ * @return {boolean} Returns true if the component is resized
+ */
+Component.prototype.redraw = function() {
+  // should be implemented by the component
+  return false;
+};
+
+/**
+ * Destroy the component. Cleanup DOM and event listeners
+ */
+Component.prototype.destroy = function() {
+  // should be implemented by the component
+};
+
+/**
+ * Test whether the component is resized since the last time _isResized() was
+ * called.
+ * @return {Boolean} Returns true if the component is resized
+ * @protected
+ */
+Component.prototype._isResized = function() {
+  var resized = (this.props._previousWidth !== this.props.width ||
+      this.props._previousHeight !== this.props.height);
+
+  this.props._previousWidth = this.props.width;
+  this.props._previousHeight = this.props.height;
+
+  return resized;
+};
+
+module.exports = Component;