1 files changed, 56 insertions, 0 deletions
diff --git a/packages/gitbook-core/src/components/Backdrop.js b/packages/gitbook-core/src/components/Backdrop.js
new file mode 100644
index 0000000..7b34b0d
--- /dev/null
+++ b/packages/gitbook-core/src/components/Backdrop.js
@@ -0,0 +1,56 @@
+const React = require('react');
+const HotKeys = require('./HotKeys');
+
+/**
+ * Backdrop for modals, dropdown, etc. that covers the whole screen
+ * and handles click and pressing escape.
+ *
+ * <Backdrop onClose={onCloseModal} />
+ */
+const Backdrop = React.createClass({
+    propTypes: {
+        // Callback when backdrop is closed
+        onClose:  React.PropTypes.func.isRequired,
+        // Z-index for the backdrop
+        zIndex:   React.PropTypes.number,
+        children: React.PropTypes.node
+    },
+
+    getDefaultProps() {
+        return {
+            zIndex: 200
+        };
+    },
+
+    onClick(event) {
+        const { onClose } = this.props;
+
+        event.preventDefault();
+        event.stopPropagation();
+
+        onClose();
+    },
+
+    render() {
+        const { zIndex, children, onClose } = this.props;
+        const style = {
+            zIndex,
+            position: 'fixed',
+            top: 0,
+            right: 0,
+            width: '100%',
+            height: '100%'
+        };
+        const keyMap = {
+            'escape': onClose
+        };
+
+        return (
+            <HotKeys keyMap={keyMap}>
+                <div style={style} onClick={this.onClick}>{children}</div>
+            </HotKeys>
+        );
+    }
+});
+
+module.exports = Backdrop;