1 files changed, 78 insertions, 0 deletions
diff --git a/src/client/views/nodes/FormattedTextBoxComment.tsx b/src/client/views/nodes/FormattedTextBoxComment.tsx
new file mode 100644
index 000000000..e88c85a86
--- /dev/null
+++ b/src/client/views/nodes/FormattedTextBoxComment.tsx
@@ -0,0 +1,78 @@
+import { Plugin, EditorState, TextSelection } from "prosemirror-state"
+import './FormattedTextBoxComment.scss'
+import { DragManager } from "../../util/DragManager";
+import { ResolvedPos, Mark } from "prosemirror-model";
+import { EditorView } from "prosemirror-view";
+import { Doc } from "../../../new_fields/Doc";
+
+export let selectionSizePlugin = new Plugin({
+    view(editorView) { return new SelectionSizeTooltip(editorView); }
+})
+export function findOtherUserMark(marks: Mark[]): Mark | undefined {
+    return marks.find(m => m.attrs.userid && m.attrs.userid !== Doc.CurrentUserEmail);
+}
+export function findUserMark(marks: Mark[]): Mark | undefined {
+    return marks.find(m => m.attrs.userid);
+}
+export function findStartOfMark(rpos: ResolvedPos, view: EditorView, finder: (marks: Mark[]) => Mark | undefined) {
+    let before = 0;
+    let nbef = rpos.nodeBefore;
+    while (nbef && finder(nbef.marks)) {
+        before += nbef.nodeSize;
+        rpos = view.state.doc.resolve(rpos.pos - nbef.nodeSize);
+        rpos && (nbef = rpos.nodeBefore);
+    }
+    return before;
+}
+export function findEndOfMark(rpos: ResolvedPos, view: EditorView, finder: (marks: Mark[]) => Mark | undefined) {
+    let after = 0;
+    let naft = rpos.nodeAfter;
+    while (naft && finder(naft.marks)) {
+        after += naft.nodeSize;
+        rpos = view.state.doc.resolve(rpos.pos + naft.nodeSize);
+        rpos && (naft = rpos.nodeAfter);
+    }
+    return after;
+}
+
+export class SelectionSizeTooltip {
+    static tooltip: any;
+    constructor(view: any) {
+        if (!SelectionSizeTooltip.tooltip) {
+            SelectionSizeTooltip.tooltip = document.createElement("div");
+            SelectionSizeTooltip.tooltip.className = "FormattedTextBox-tooltip";
+            DragManager.Root().appendChild(SelectionSizeTooltip.tooltip);
+        }
+
+        this.update(view, undefined);
+    }
+
+
+    update(view: EditorView, lastState?: EditorState) {
+        let state = view.state;
+        // Don't do anything if the document/selection didn't change
+        if (lastState && lastState.doc.eq(state.doc) &&
+            lastState.selection.eq(state.selection)) return;
+
+        if (state.selection.$from) {
+            let nbef = findStartOfMark(state.selection.$from, view, findOtherUserMark);
+            let naft = findEndOfMark(state.selection.$from, view, findOtherUserMark);
+            let child = state.selection.$from.nodeBefore;
+            let mark = child && findOtherUserMark(child.marks);
+            if (mark && child && nbef && naft && mark.attrs.opened && SelectionSizeTooltip.tooltip.offsetParent) {
+                SelectionSizeTooltip.tooltip.textContent = mark.attrs.userid;
+                // These are in screen coordinates
+                let start = view.coordsAtPos(state.selection.from), end = view.coordsAtPos(state.selection.to);
+                // The box in which the tooltip is positioned, to use as base
+                let box = SelectionSizeTooltip.tooltip.offsetParent.getBoundingClientRect();
+                // Find a center-ish x position from the selection endpoints (when
+                // crossing lines, end may be more to the left)
+                let left = Math.max((start.left + end.left) / 2, start.left + 3);
+                SelectionSizeTooltip.tooltip.style.left = (left - box.left) + "px";
+                SelectionSizeTooltip.tooltip.style.bottom = (box.bottom - start.top) + "px";
+            }
+        }
+    }
+
+    destroy() { SelectionSizeTooltip.tooltip.style.display = "none" }
+}