1 files changed, 104 insertions, 0 deletions
diff --git a/src/client/util/ProsemirrorExampleTransfer.ts b/src/client/util/ProsemirrorExampleTransfer.ts
new file mode 100644
index 000000000..fa9e2e5af
--- /dev/null
+++ b/src/client/util/ProsemirrorExampleTransfer.ts
@@ -0,0 +1,104 @@
+import { Schema, NodeType } from "prosemirror-model";
+import {
+    wrapIn, setBlockType, chainCommands, toggleMark, exitCode,
+    joinUp, joinDown, lift, selectParentNode
+} from "prosemirror-commands";
+import { wrapInList, splitListItem, liftListItem, sinkListItem } from "prosemirror-schema-list";
+import { undo, redo } from "prosemirror-history";
+import { undoInputRule } from "prosemirror-inputrules";
+import { Transaction, EditorState } from "prosemirror-state";
+import { TooltipTextMenu } from "./TooltipTextMenu";
+import { Statement } from "../northstar/model/idea/idea";
+
+const mac = typeof navigator !== "undefined" ? /Mac/.test(navigator.platform) : false;
+
+export type KeyMap = { [key: string]: any };
+
+export default function buildKeymap<S extends Schema<any>>(schema: S, mapKeys?: KeyMap): KeyMap {
+    let keys: { [key: string]: any } = {}, type;
+
+    function bind(key: string, cmd: any) {
+        if (mapKeys) {
+            let mapped = mapKeys[key];
+            if (mapped === false) return;
+            if (mapped) key = mapped;
+        }
+        keys[key] = cmd;
+    }
+
+    bind("Mod-z", undo);
+    bind("Shift-Mod-z", redo);
+    bind("Backspace", undoInputRule);
+
+    if (!mac) {
+        bind("Mod-y", redo);
+    }
+
+    bind("Alt-ArrowUp", joinUp);
+    bind("Alt-ArrowDown", joinDown);
+    bind("Mod-BracketLeft", lift);
+    bind("Escape", selectParentNode);
+
+    if (type = schema.marks.strong) {
+        bind("Mod-b", toggleMark(type));
+        bind("Mod-B", toggleMark(type));
+    }
+    if (type = schema.marks.em) {
+        bind("Mod-i", toggleMark(type));
+        bind("Mod-I", toggleMark(type));
+    }
+    if (type = schema.marks.code) {
+        bind("Mod-`", toggleMark(type));
+    }
+
+    if (type = schema.nodes.bullet_list) {
+        bind("Ctrl-.", wrapInList(type));
+    }
+    if (type = schema.nodes.ordered_list) {
+        bind("Ctrl-n", wrapInList(type));
+    }
+    if (type = schema.nodes.blockquote) {
+        bind("Ctrl->", wrapIn(type));
+    }
+    if (type = schema.nodes.hard_break) {
+        let br = type, cmd = chainCommands(exitCode, (state, dispatch) => {
+            if (dispatch) {
+                dispatch(state.tr.replaceSelectionWith(br.create()).scrollIntoView());
+                return true;
+            }
+            return false;
+        });
+        bind("Mod-Enter", cmd);
+        bind("Shift-Enter", cmd);
+        if (mac) {
+            bind("Ctrl-Enter", cmd);
+        }
+    }
+    if (type = schema.nodes.list_item) {
+        bind("Enter", splitListItem(type));
+        bind("Shift-Tab", liftListItem(type));
+        bind("Tab", sinkListItem(type));
+    }
+    if (type = schema.nodes.paragraph) {
+        bind("Shift-Ctrl-0", setBlockType(type));
+    }
+    if (type = schema.nodes.code_block) {
+        bind("Shift-Ctrl-\\", setBlockType(type));
+    }
+    if (type = schema.nodes.heading) {
+        for (let i = 1; i <= 6; i++) {
+            bind("Shift-Ctrl-" + i, setBlockType(type, { level: i }));
+        }
+    }
+    if (type = schema.nodes.horizontal_rule) {
+        let hr = type;
+        bind("Mod-_", (state: EditorState<S>, dispatch: (tx: Transaction<S>) => void) => {
+            dispatch(state.tr.replaceSelectionWith(hr.create()).scrollIntoView());
+            return true;
+        });
+    }
+
+    bind("Mod-s", TooltipTextMenu.insertStar);
+
+    return keys;
+}