From 400c525875af607dd76d7ec46949fedc418caabf Mon Sep 17 00:00:00 2001
From: bob <bcz@cs.brown.edu>
Date: Mon, 8 Jul 2019 10:54:53 -0400
Subject: fixed annotation dragging on PDFs.  fixed panning after zooming on
 images.

---
 src/client/views/pdf/PDFMenu.tsx | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

(limited to 'src/client/views/pdf/PDFMenu.tsx')

diff --git a/src/client/views/pdf/PDFMenu.tsx b/src/client/views/pdf/PDFMenu.tsx
index f93b2e59f..d6970e7f4 100644
--- a/src/client/views/pdf/PDFMenu.tsx
+++ b/src/client/views/pdf/PDFMenu.tsx
@@ -3,11 +3,8 @@ import "./PDFMenu.scss";
 import { observable, action, runInAction } from "mobx";
 import { observer } from "mobx-react";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
-import { emptyFunction, returnZero, returnTrue, returnFalse } from "../../../Utils";
+import { emptyFunction, returnFalse } from "../../../Utils";
 import { Doc } from "../../../new_fields/Doc";
-import { DragManager } from "../../util/DragManager";
-import { DocUtils } from "../../documents/Documents";
-import { PresentationView } from "../presentationview/PresentationView";
 
 @observer
 export default class PDFMenu extends React.Component {
@@ -20,7 +17,7 @@ export default class PDFMenu extends React.Component {
     @observable private _transitionDelay: string = "";
 
 
-    StartDrag: (e: PointerEvent) => void = emptyFunction;
+    StartDrag: (e: PointerEvent, ele: HTMLDivElement) => void = emptyFunction;
     Highlight: (d: Doc | undefined, color: string | undefined) => void = emptyFunction;
     Delete: () => void = emptyFunction;
     Snippet: (marquee: { left: number, top: number, width: number, height: number }) => void = emptyFunction;
@@ -35,9 +32,10 @@ export default class PDFMenu extends React.Component {
 
     private _offsetY: number = 0;
     private _offsetX: number = 0;
-    private _mainCont: React.RefObject<HTMLDivElement>;
+    private _mainCont: React.RefObject<HTMLDivElement> = React.createRef();
+    private _commentCont: React.RefObject<HTMLDivElement> = React.createRef();
+    private _snippetButton: React.RefObject<HTMLButtonElement> = React.createRef();
     private _dragging: boolean = false;
-    private _snippetButton: React.RefObject<HTMLButtonElement>;
     @observable private _keyValue: string = "";
     @observable private _valueValue: string = "";
     @observable private _added: boolean = false;
@@ -46,9 +44,6 @@ export default class PDFMenu extends React.Component {
         super(props);
 
         PDFMenu.Instance = this;
-
-        this._mainCont = React.createRef();
-        this._snippetButton = React.createRef();
     }
 
     pointerDown = (e: React.PointerEvent) => {
@@ -69,7 +64,7 @@ export default class PDFMenu extends React.Component {
             return;
         }
 
-        this.StartDrag(e);
+        this.StartDrag(e, this._commentCont.current!);
         this._dragging = true;
     }
 
@@ -246,7 +241,7 @@ export default class PDFMenu extends React.Component {
                 style={this.Highlighting ? { backgroundColor: "#121212" } : {}}>
                 <FontAwesomeIcon icon="highlighter" size="lg" style={{ transition: "transform 0.1s", transform: this.Highlighting ? "" : "rotate(-45deg)" }} />
             </button>,
-            <button className="pdfMenu-button" title="Drag to Annotate" onPointerDown={this.pointerDown}><FontAwesomeIcon icon="comment-alt" size="lg" key="2" /></button>,
+            <button className="pdfMenu-button" title="Drag to Annotate" ref={this._commentCont} onPointerDown={this.pointerDown}><FontAwesomeIcon icon="comment-alt" size="lg" key="2" /></button>,
             this.Status === "snippet" ? <button className="pdfMenu-button" title="Drag to Snippetize Selection" onPointerDown={this.snippetStart} ref={this._snippetButton}><FontAwesomeIcon icon="cut" size="lg" /></button> : undefined,
             <button className="pdfMenu-button" title="Pin Menu" onClick={this.togglePin} key="3"
                 style={this.Pinned ? { backgroundColor: "#121212" } : {}}>
-- 
cgit v1.2.3-70-g09d2


From a69a43015ec414bd1a9577c03fbeb5c3b27fb55f Mon Sep 17 00:00:00 2001
From: yipstanley <stanley_yip@brown.edu>
Date: Thu, 11 Jul 2019 12:36:34 -0400
Subject: fixes

---
 src/client/util/DocumentManager.ts                 |  8 +++--
 src/client/util/DragManager.ts                     | 35 ++++++++++++--------
 src/client/util/LinkManager.ts                     |  6 ++--
 src/client/util/RichTextSchema.tsx                 | 14 ++++++++
 src/client/util/TooltipTextMenu.tsx                |  2 ++
 src/client/views/MainView.tsx                      |  6 ++--
 .../views/collections/CollectionTreeView.tsx       |  9 +++++-
 src/client/views/nodes/LinkEditor.tsx              | 37 +++++++++++++---------
 src/client/views/nodes/LinkMenuGroup.tsx           | 16 ++++++++--
 src/client/views/nodes/PDFBox.tsx                  |  8 +++--
 src/client/views/pdf/PDFMenu.tsx                   |  5 +--
 src/client/views/pdf/PDFViewer.tsx                 |  4 +--
 12 files changed, 102 insertions(+), 48 deletions(-)

(limited to 'src/client/views/pdf/PDFMenu.tsx')

diff --git a/src/client/util/DocumentManager.ts b/src/client/util/DocumentManager.ts
index 8fa460bca..bb1345044 100644
--- a/src/client/util/DocumentManager.ts
+++ b/src/client/util/DocumentManager.ts
@@ -111,9 +111,11 @@ export class DocumentManager {
             pairs.push(...linksList.reduce((pairs, link) => {
                 if (link) {
                     let linkToDoc = LinkManager.Instance.getOppositeAnchor(link, dv.props.Document);
-                    DocumentManager.Instance.getDocumentViews(linkToDoc).map(docView1 => {
-                        pairs.push({ a: dv, b: docView1, l: link });
-                    });
+                    if (linkToDoc) {
+                        DocumentManager.Instance.getDocumentViews(linkToDoc).map(docView1 => {
+                            pairs.push({ a: dv, b: docView1, l: link });
+                        });
+                    }
                 }
                 return pairs;
             }, [] as { a: DocumentView, b: DocumentView, l: Doc }[]));
diff --git a/src/client/util/DragManager.ts b/src/client/util/DragManager.ts
index cb71db2c5..8e44631a3 100644
--- a/src/client/util/DragManager.ts
+++ b/src/client/util/DragManager.ts
@@ -61,16 +61,18 @@ export function SetupDrag(
 export async function DragLinkAsDocument(dragEle: HTMLElement, x: number, y: number, linkDoc: Doc, sourceDoc: Doc) {
     let draggeddoc = LinkManager.Instance.getOppositeAnchor(linkDoc, sourceDoc);
 
-    let moddrag = await Cast(draggeddoc.annotationOn, Doc);
-    let dragdocs = moddrag ? [moddrag] : [draggeddoc];
-    let dragData = new DragManager.DocumentDragData(dragdocs, dragdocs);
-    dragData.dropAction = "alias" as dropActionType;
-    DragManager.StartLinkedDocumentDrag([dragEle], sourceDoc, dragData, x, y, {
-        handlers: {
-            dragComplete: action(emptyFunction),
-        },
-        hideSource: false
-    });
+    if (draggeddoc) {
+        let moddrag = await Cast(draggeddoc.annotationOn, Doc);
+        let dragdocs = moddrag ? [moddrag] : [draggeddoc];
+        let dragData = new DragManager.DocumentDragData(dragdocs, dragdocs);
+        dragData.dropAction = "alias" as dropActionType;
+        DragManager.StartLinkedDocumentDrag([dragEle], sourceDoc, dragData, x, y, {
+            handlers: {
+                dragComplete: action(emptyFunction),
+            },
+            hideSource: false
+        });
+    }
 }
 
 export async function DragLinksAsDocuments(dragEle: HTMLElement, x: number, y: number, sourceDoc: Doc) {
@@ -80,9 +82,16 @@ export async function DragLinksAsDocuments(dragEle: HTMLElement, x: number, y: n
     if (srcTarg) {
         let linkDocs = LinkManager.Instance.getAllRelatedLinks(srcTarg);
         if (linkDocs) {
-            draggedDocs = linkDocs.map(link => {
-                return LinkManager.Instance.getOppositeAnchor(link, sourceDoc);
-            });
+            linkDocs.forEach((doc) => {
+                let opp = LinkManager.Instance.getOppositeAnchor(doc, sourceDoc);
+                if (opp) {
+                    draggedDocs.push(opp);
+                }
+            }
+            )
+            // draggedDocs = linkDocs.map(link => {
+            //     return LinkManager.Instance.getOppositeAnchor(link, sourceDoc);
+            // });
         }
     }
     if (draggedDocs.length) {
diff --git a/src/client/util/LinkManager.ts b/src/client/util/LinkManager.ts
index 944bc532f..1ed040aa4 100644
--- a/src/client/util/LinkManager.ts
+++ b/src/client/util/LinkManager.ts
@@ -232,11 +232,11 @@ export class LinkManager {
     // finds the opposite anchor of a given anchor in a link
     //TODO This should probably return undefined if there isn't an opposite anchor
     //TODO This should also await the return value of the anchor so we don't filter out promises
-    public getOppositeAnchor(linkDoc: Doc, anchor: Doc): Doc {
+    public getOppositeAnchor(linkDoc: Doc, anchor: Doc): Doc | undefined {
         if (Doc.AreProtosEqual(anchor, Cast(linkDoc.anchor1, Doc, null))) {
-            return Cast(linkDoc.anchor2, Doc, null)!;
+            return Cast(linkDoc.anchor2, Doc, null);
         } else {
-            return Cast(linkDoc.anchor1, Doc, null)!;
+            return Cast(linkDoc.anchor1, Doc, null);
         }
     }
 }
\ No newline at end of file
diff --git a/src/client/util/RichTextSchema.tsx b/src/client/util/RichTextSchema.tsx
index 2a57180d3..b6402da13 100644
--- a/src/client/util/RichTextSchema.tsx
+++ b/src/client/util/RichTextSchema.tsx
@@ -400,6 +400,20 @@ export const marks: { [index: string]: MarkSpec } = {
         }]
     },
 
+    p18: {
+        parseDOM: [{ style: 'font-size: 18px;' }],
+        toDOM: () => ['span', {
+            style: 'font-size: 18px;'
+        }]
+    },
+
+    p20: {
+        parseDOM: [{ style: 'font-size: 20px;' }],
+        toDOM: () => ['span', {
+            style: 'font-size: 20px;'
+        }]
+    },
+
     p24: {
         parseDOM: [{ style: 'font-size: 24px;' }],
         toDOM: () => ['span', {
diff --git a/src/client/util/TooltipTextMenu.tsx b/src/client/util/TooltipTextMenu.tsx
index cb7ed976a..81a966923 100644
--- a/src/client/util/TooltipTextMenu.tsx
+++ b/src/client/util/TooltipTextMenu.tsx
@@ -107,6 +107,8 @@ export class TooltipTextMenu {
         this.fontSizeToNum.set(schema.marks.p12, 12);
         this.fontSizeToNum.set(schema.marks.p14, 14);
         this.fontSizeToNum.set(schema.marks.p16, 16);
+        this.fontSizeToNum.set(schema.marks.p18, 18);
+        this.fontSizeToNum.set(schema.marks.p20, 20);
         this.fontSizeToNum.set(schema.marks.p24, 24);
         this.fontSizeToNum.set(schema.marks.p32, 32);
         this.fontSizeToNum.set(schema.marks.p48, 48);
diff --git a/src/client/views/MainView.tsx b/src/client/views/MainView.tsx
index bf4ee84d6..df5c2020a 100644
--- a/src/client/views/MainView.tsx
+++ b/src/client/views/MainView.tsx
@@ -394,9 +394,9 @@ export class MainView extends React.Component {
                         </div></li>)}
                     <li key="undoTest"><button className="add-button round-button" onClick={() => UndoManager.PrintBatches()}><FontAwesomeIcon icon="exclamation" size="sm" /></button></li>
                     <li key="ink" style={{ paddingRight: "6px" }}><button className="toolbar-button round-button" title="Ink" onClick={() => InkingControl.Instance.toggleDisplay()}><FontAwesomeIcon icon="pen-nib" size="sm" /> </button></li>
-                    <li key="pen"><button onClick={() => InkingControl.Instance.switchTool(InkTool.Pen)} style={this.selected(InkTool.Pen)}><FontAwesomeIcon icon="pen" size="lg" title="Pen" /></button></li>
-                    <li key="marker"><button onClick={() => InkingControl.Instance.switchTool(InkTool.Highlighter)} style={this.selected(InkTool.Highlighter)}><FontAwesomeIcon icon="highlighter" size="lg" title="Pen" /></button></li>
-                    <li key="eraser"><button onClick={() => InkingControl.Instance.switchTool(InkTool.Eraser)} style={this.selected(InkTool.Eraser)}><FontAwesomeIcon icon="eraser" size="lg" title="Pen" /></button></li>
+                    <li key="pen"><button onClick={() => InkingControl.Instance.switchTool(InkTool.Pen)} title="Pen" style={this.selected(InkTool.Pen)}><FontAwesomeIcon icon="pen" size="lg" /></button></li>
+                    <li key="marker"><button onClick={() => InkingControl.Instance.switchTool(InkTool.Highlighter)} title="Highlighter" style={this.selected(InkTool.Highlighter)}><FontAwesomeIcon icon="highlighter" size="lg" /></button></li>
+                    <li key="eraser"><button onClick={() => InkingControl.Instance.switchTool(InkTool.Eraser)} title="Eraser" style={this.selected(InkTool.Eraser)}><FontAwesomeIcon icon="eraser" size="lg" /></button></li>
                     <li key="inkControls"><InkingControl /></li>
                 </ul>
             </div>
diff --git a/src/client/views/collections/CollectionTreeView.tsx b/src/client/views/collections/CollectionTreeView.tsx
index 3674a743a..f8e5f72e4 100644
--- a/src/client/views/collections/CollectionTreeView.tsx
+++ b/src/client/views/collections/CollectionTreeView.tsx
@@ -301,7 +301,14 @@ class TreeView extends React.Component<TreeViewProps> {
         let addDoc = (doc: Doc, addBefore?: Doc, before?: boolean) => Doc.AddDocToList(this.props.document, this._chosenKey, doc, addBefore, before);
         let groups = LinkManager.Instance.getRelatedGroupedLinks(this.props.document);
         groups.forEach((groupLinkDocs, groupType) => {
-            let destLinks = groupLinkDocs.map(d => LinkManager.Instance.getOppositeAnchor(d, this.props.document));
+            // let destLinks = groupLinkDocs.map(d => LinkManager.Instance.getOppositeAnchor(d, this.props.document));
+            let destLinks: Doc[] = [];
+            groupLinkDocs.forEach((doc) => {
+                let opp = LinkManager.Instance.getOppositeAnchor(doc, this.props.document);
+                if (opp) {
+                    destLinks.push(opp);
+                }
+            });
             ele.push(
                 <div key={"treeviewlink-" + groupType + "subtitle"}>
                     <div className="collectionTreeView-subtitle">{groupType}:</div>
diff --git a/src/client/views/nodes/LinkEditor.tsx b/src/client/views/nodes/LinkEditor.tsx
index a97ec8831..df56a19d0 100644
--- a/src/client/views/nodes/LinkEditor.tsx
+++ b/src/client/views/nodes/LinkEditor.tsx
@@ -200,7 +200,9 @@ export class LinkGroupEditor extends React.Component<LinkGroupEditorProps> {
         destGroupDoc.type = groupType;
         destGroupDoc.metadata = destMdDoc;
 
-        LinkManager.Instance.addGroupToAnchor(this.props.linkDoc, destDoc, destGroupDoc, true);
+        if (destDoc) {
+            LinkManager.Instance.addGroupToAnchor(this.props.linkDoc, destDoc, destGroupDoc, true);
+        }
     }
 
     @action
@@ -308,7 +310,10 @@ export class LinkEditor extends React.Component<LinkEditorProps> {
         // create new metadata document for group
         let mdDoc = new Doc();
         mdDoc.anchor1 = this.props.sourceDoc.title;
-        mdDoc.anchor2 = LinkManager.Instance.getOppositeAnchor(this.props.linkDoc, this.props.sourceDoc).title;
+        let opp = LinkManager.Instance.getOppositeAnchor(this.props.linkDoc, this.props.sourceDoc);
+        if (opp) {
+            mdDoc.anchor2 = opp.title;
+        }
 
         // create new group document
         let groupDoc = new Doc();
@@ -326,20 +331,22 @@ export class LinkEditor extends React.Component<LinkEditorProps> {
             return <LinkGroupEditor key={"gred-" + StrCast(groupDoc.type)} linkDoc={this.props.linkDoc} sourceDoc={this.props.sourceDoc} groupDoc={groupDoc} />;
         });
 
-        return (
-            <div className="linkEditor">
-                <button className="linkEditor-back" onPointerDown={() => this.props.showLinks()}><FontAwesomeIcon icon="arrow-left" size="sm" /></button>
-                <div className="linkEditor-info">
-                    <p className="linkEditor-linkedTo">editing link to: <b>{destination.proto!.title}</b></p>
-                    <button className="linkEditor-button" onPointerDown={() => this.deleteLink()} title="Delete link"><FontAwesomeIcon icon="trash" size="sm" /></button>
-                </div>
-                <div className="linkEditor-groupsLabel">
-                    <b>Relationships:</b>
-                    <button className="linkEditor-button" onClick={() => this.addGroup()} title=" Add Group"><FontAwesomeIcon icon="plus" size="sm" /></button>
+        if (destination) {
+            return (
+                <div className="linkEditor">
+                    <button className="linkEditor-back" onPointerDown={() => this.props.showLinks()}><FontAwesomeIcon icon="arrow-left" size="sm" /></button>
+                    <div className="linkEditor-info">
+                        <p className="linkEditor-linkedTo">editing link to: <b>{destination.proto!.title}</b></p>
+                        <button className="linkEditor-button" onPointerDown={() => this.deleteLink()} title="Delete link"><FontAwesomeIcon icon="trash" size="sm" /></button>
+                    </div>
+                    <div className="linkEditor-groupsLabel">
+                        <b>Relationships:</b>
+                        <button className="linkEditor-button" onClick={() => this.addGroup()} title=" Add Group"><FontAwesomeIcon icon="plus" size="sm" /></button>
+                    </div>
+                    {groups.length > 0 ? groups : <div className="linkEditor-group">There are currently no relationships associated with this link.</div>}
                 </div>
-                {groups.length > 0 ? groups : <div className="linkEditor-group">There are currently no relationships associated with this link.</div>}
-            </div>
 
-        );
+            );
+        }
     }
 }
\ No newline at end of file
diff --git a/src/client/views/nodes/LinkMenuGroup.tsx b/src/client/views/nodes/LinkMenuGroup.tsx
index e4cf56d20..97f2e13ae 100644
--- a/src/client/views/nodes/LinkMenuGroup.tsx
+++ b/src/client/views/nodes/LinkMenuGroup.tsx
@@ -45,7 +45,15 @@ export class LinkMenuGroup extends React.Component<LinkMenuGroupProps> {
             document.removeEventListener("pointermove", this.onLinkButtonMoved);
             document.removeEventListener("pointerup", this.onLinkButtonUp);
 
-            let draggedDocs = this.props.group.map(linkDoc => LinkManager.Instance.getOppositeAnchor(linkDoc, this.props.sourceDoc));
+            let draggedDocs: Doc[] = [];
+            this.props.group.forEach(
+                (doc: Doc) => {
+                    let opp = LinkManager.Instance.getOppositeAnchor(doc, this.props.sourceDoc);
+                    if (opp) {
+                        draggedDocs.push(opp);
+                    }
+                }
+            )
             let dragData = new DragManager.DocumentDragData(draggedDocs, draggedDocs.map(d => undefined));
 
             DragManager.StartLinkedDocumentDrag([this._drag.current], this.props.sourceDoc, dragData, e.x, e.y, {
@@ -72,8 +80,10 @@ export class LinkMenuGroup extends React.Component<LinkMenuGroupProps> {
     render() {
         let groupItems = this.props.group.map(linkDoc => {
             let destination = LinkManager.Instance.getOppositeAnchor(linkDoc, this.props.sourceDoc);
-            return <LinkMenuItem key={destination[Id] + this.props.sourceDoc[Id]} groupType={this.props.groupType}
-                linkDoc={linkDoc} sourceDoc={this.props.sourceDoc} destinationDoc={destination} showEditor={this.props.showEditor} />;
+            if (destination) {
+                return <LinkMenuItem key={destination[Id] + this.props.sourceDoc[Id]} groupType={this.props.groupType}
+                    linkDoc={linkDoc} sourceDoc={this.props.sourceDoc} destinationDoc={destination} showEditor={this.props.showEditor} />;
+            }
         });
 
         return (
diff --git a/src/client/views/nodes/PDFBox.tsx b/src/client/views/nodes/PDFBox.tsx
index cc02bb282..2ff5c089f 100644
--- a/src/client/views/nodes/PDFBox.tsx
+++ b/src/client/views/nodes/PDFBox.tsx
@@ -23,9 +23,11 @@ import { CompileScript } from '../../util/Scripting';
 import { Flyout, anchorPoints } from '../DocumentDecorations';
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
 import { ScriptField } from '../../../new_fields/ScriptField';
+import { KeyCodes } from '../../northstar/utils/KeyCodes';
 
 type PdfDocument = makeInterface<[typeof positionSchema, typeof pageSchema]>;
 const PdfDocument = makeInterface(positionSchema, pageSchema);
+export const handleBackspace = (e: React.KeyboardEvent) => { if (e.keyCode === KeyCodes.BACKSPACE) e.stopPropagation() }
 
 @observer
 export class PDFBox extends DocComponent<FieldViewProps, PdfDocument>(PdfDocument) {
@@ -175,13 +177,13 @@ export class PDFBox extends DocComponent<FieldViewProps, PdfDocument>(PdfDocumen
                             Annotation View Settings
                         </div>
                         <div className="pdfBox-settingsFlyout-kvpInput">
-                            <input placeholder="Key" className="pdfBox-settingsFlyout-input" onChange={this.newKeyChange}
+                            <input placeholder="Key" className="pdfBox-settingsFlyout-input" onKeyDown={handleBackspace} onChange={this.newKeyChange}
                                 style={{ gridColumn: 1 }} ref={this._keyRef} />
-                            <input placeholder="Value" className="pdfBox-settingsFlyout-input" onChange={this.newValueChange}
+                            <input placeholder="Value" className="pdfBox-settingsFlyout-input" onKeyDown={handleBackspace} onChange={this.newValueChange}
                                 style={{ gridColumn: 3 }} ref={this._valueRef} />
                         </div>
                         <div className="pdfBox-settingsFlyout-kvpInput">
-                            <input placeholder="Custom Script" onChange={this.newScriptChange} style={{ gridColumn: "1 / 4" }} ref={this._scriptRef} />
+                            <input placeholder="Custom Script" onChange={this.newScriptChange} onKeyDown={handleBackspace} style={{ gridColumn: "1 / 4" }} ref={this._scriptRef} />
                         </div>
                         <div className="pdfBox-settingsFlyout-kvpInput">
                             <button style={{ gridColumn: 1 }} onClick={this.resetFilters}>
diff --git a/src/client/views/pdf/PDFMenu.tsx b/src/client/views/pdf/PDFMenu.tsx
index d6970e7f4..feaa1f652 100644
--- a/src/client/views/pdf/PDFMenu.tsx
+++ b/src/client/views/pdf/PDFMenu.tsx
@@ -5,6 +5,7 @@ import { observer } from "mobx-react";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import { emptyFunction, returnFalse } from "../../../Utils";
 import { Doc } from "../../../new_fields/Doc";
+import { handleBackspace } from "../nodes/PDFBox";
 
 @observer
 export default class PDFMenu extends React.Component {
@@ -251,8 +252,8 @@ export default class PDFMenu extends React.Component {
                 <button className="pdfMenu-button" title="Delete Anchor" onPointerDown={this.deleteClicked}><FontAwesomeIcon icon="trash-alt" size="lg" key="1" /></button>,
                 <button className="pdfMenu-button" title="Pin to Presentation" onPointerDown={this.PinToPres}><FontAwesomeIcon icon="map-pin" size="lg" key="2" /></button>,
                 <div className="pdfMenu-addTag" key="3">
-                    <input onChange={this.keyChanged} placeholder="Key" style={{ gridColumn: 1 }} />
-                    <input onChange={this.valueChanged} placeholder="Value" style={{ gridColumn: 3 }} />
+                    <input onKeyDown={handleBackspace} onChange={this.keyChanged} placeholder="Key" style={{ gridColumn: 1 }} />
+                    <input onKeyDown={handleBackspace} onChange={this.valueChanged} placeholder="Value" style={{ gridColumn: 3 }} />
                 </div>,
                 <button className="pdfMenu-button" title={`Add tag: ${this._keyValue} with value: ${this._valueValue}`} onPointerDown={this.addTag}><FontAwesomeIcon style={{ transition: "all .2s" }} color={this._added ? "#42f560" : "white"} icon="check" size="lg" key="4" /></button>,
             ];
diff --git a/src/client/views/pdf/PDFViewer.tsx b/src/client/views/pdf/PDFViewer.tsx
index 8af29110f..761db7922 100644
--- a/src/client/views/pdf/PDFViewer.tsx
+++ b/src/client/views/pdf/PDFViewer.tsx
@@ -14,7 +14,7 @@ import { Docs, DocUtils, DocumentOptions } from "../../documents/Documents";
 import { DocumentManager } from "../../util/DocumentManager";
 import { DragManager } from "../../util/DragManager";
 import { DocumentView } from "../nodes/DocumentView";
-import { PDFBox } from "../nodes/PDFBox";
+import { PDFBox, handleBackspace } from "../nodes/PDFBox";
 import Page from "./Page";
 import "./PDFViewer.scss";
 import React = require("react");
@@ -648,7 +648,7 @@ export class Viewer extends React.Component<IViewerProps> {
                     <button className="pdfViewer-overlayButton" title="Open Search Bar"></button>
                     {/* <button title="Previous Result" onClick={() => this.search(this._searchString)}><FontAwesomeIcon icon="arrow-up" size="3x" color="white" /></button>
                     <button title="Next Result" onClick={this.nextResult}><FontAwesomeIcon icon="arrow-down" size="3x" color="white" /></button> */}
-                    <input placeholder="Search" className="pdfViewer-overlaySearchBar" onChange={this.searchStringChanged} />
+                    <input onKeyDown={handleBackspace} placeholder="Search" className="pdfViewer-overlaySearchBar" onChange={this.searchStringChanged} />
                     <button title="Search" onClick={() => this.search(this._searchString)}><FontAwesomeIcon icon="search" size="3x" color="white" /></button>
                 </div>
                 <button className="pdfViewer-overlayButton" onClick={this.prevAnnotation} title="Previous Annotation"
-- 
cgit v1.2.3-70-g09d2