1 files changed, 126 insertions, 0 deletions
diff --git a/packages/gitbook-core/src/components/Dropdown.js b/packages/gitbook-core/src/components/Dropdown.js
new file mode 100644
index 0000000..83a377f
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+++ b/packages/gitbook-core/src/components/Dropdown.js
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+const React      = require('react');
+const classNames = require('classnames');
+
+/**
+ * Dropdown to display a menu
+ *
+ * <Dropdown.Container>
+ *
+ *     <Button />
+ *
+ *     <Dropdown.Menu>
+ *         <Dropdown.Item href={...}> ... </Dropdown.Item>
+ *         <Dropdown.Item onClick={...}> ... </Dropdown.Item>
+ *     </Dropdown.Menu>
+ * </Dropdown.Container>
+ */
+
+const DropdownContainer = React.createClass({
+    propTypes: {
+        className:  React.PropTypes.string,
+        children: React.PropTypes.node
+    },
+
+    render() {
+        let { className, children } = this.props;
+
+        className = classNames(
+            'GitBook-Dropdown',
+            className
+        );
+
+        return (
+            <div className={className}>
+                {children}
+            </div>
+        );
+    }
+});
+
+/**
+ * A dropdown item which can contains informations.
+ */
+const DropdownItem = React.createClass({
+    propTypes: {
+        children:  React.PropTypes.node
+    },
+
+    render() {
+        const { children } = this.props;
+
+        return (
+            <div className="GitBook-DropdownItem">
+                {children}
+            </div>
+        );
+    }
+});
+
+
+/**
+ * A dropdown item, which is always a link.
+ */
+const DropdownItemLink = React.createClass({
+    propTypes: {
+        children:  React.PropTypes.node,
+        onClick:   React.PropTypes.func,
+        href:      React.PropTypes.string
+    },
+
+    onClick(event) {
+        const { onClick, href } = this.props;
+
+        if (href) {
+            return;
+        }
+
+        event.preventDefault();
+        event.stopPropagation();
+
+        if (onClick) {
+            onClick();
+        }
+    },
+
+    render() {
+        const { children, href, ...otherProps } = this.props;
+
+        return (
+            <a {...otherProps} className="GitBook-DropdownItemLink" href={href || '#'} onClick={this.onClick} >
+                {children}
+            </a>
+        );
+    }
+});
+
+
+/**
+ * A DropdownMenu to display DropdownItems. Must be inside a
+ * DropdownContainer.
+ */
+const DropdownMenu = React.createClass({
+    propTypes: {
+        className: React.PropTypes.string,
+        children:  React.PropTypes.node
+    },
+
+    render() {
+        let { className, children } = this.props;
+        className = classNames('GitBook-DropdownMenu', className);
+
+        return (
+            <div className={className}>
+                {children}
+            </div>
+        );
+    }
+});
+
+const Dropdown = {
+    Item: DropdownItem,
+    ItemLink: DropdownItemLink,
+    Menu: DropdownMenu,
+    Container: DropdownContainer
+};
+
+module.exports = Dropdown;