1 files changed, 55 insertions, 0 deletions
diff --git a/src/client/views/PreviewCursor.tsx b/src/client/views/PreviewCursor.tsx
new file mode 100644
index 000000000..4359ba093
--- /dev/null
+++ b/src/client/views/PreviewCursor.tsx
@@ -0,0 +1,55 @@
+import { action, observable } from 'mobx';
+import { observer } from 'mobx-react';
+import "normalize.css";
+import * as React from 'react';
+import "./PreviewCursor.scss";
+
+@observer
+export class PreviewCursor extends React.Component<{}> {
+    private _prompt = React.createRef<HTMLDivElement>();
+    static _onKeyPress?: (e: KeyboardEvent) => void;
+    @observable static _clickPoint = [0, 0];
+    @observable public static Visible = false;
+    //when focus is lost, this will remove the preview cursor
+    @action onBlur = (): void => {
+        PreviewCursor.Visible = false;
+    }
+
+    constructor(props: any) {
+        super(props);
+        document.addEventListener("keydown", this.onKeyPress)
+    }
+
+    @action
+    onKeyPress = (e: KeyboardEvent) => {
+        // Mixing events between React and Native is finicky.  In FormattedTextBox, we set the
+        // DASHFormattedTextBoxHandled flag when a text box consumes a key press so that we can ignore
+        // the keyPress here.
+        //if not these keys, make a textbox if preview cursor is active!
+        if (e.key.startsWith("F") && !e.key.endsWith("F")) {
+        } else if (e.key != "Escape" && e.key != "Alt" && e.key != "Shift" && e.key != "Meta" && e.key != "Control" && !e.defaultPrevented && !(e as any).DASHFormattedTextBoxHandled) {
+            if ((!e.ctrlKey && !e.metaKey) || e.key === "v") {
+                PreviewCursor.Visible && PreviewCursor._onKeyPress && PreviewCursor._onKeyPress(e);
+                PreviewCursor.Visible = false;
+            }
+        }
+    }
+    @action
+    public static Show(x: number, y: number, onKeyPress: (e: KeyboardEvent) => void) {
+        this._clickPoint = [x, y];
+        this._onKeyPress = onKeyPress;
+        setTimeout(action(() => this.Visible = true), (1));
+    }
+    render() {
+        if (!PreviewCursor._clickPoint) {
+            return (null);
+        }
+        if (PreviewCursor.Visible && this._prompt.current) {
+            this._prompt.current.focus();
+        }
+        return <div className="previewCursor" id="previewCursor" onBlur={this.onBlur} tabIndex={0} ref={this._prompt}
+            style={{ transform: `translate(${PreviewCursor._clickPoint[0]}px, ${PreviewCursor._clickPoint[1]}px)`, opacity: PreviewCursor.Visible ? 1 : 0 }}>
+            I
+        </div >;
+    }
+}
+\ No newline at end of file