From 02dbe3ef2edaa40658862c1c92e73730c8e75ee1 Mon Sep 17 00:00:00 2001
From: Adam Hess <adamhess1991@gmail.com>
Date: Sun, 6 Oct 2019 16:24:39 -0700
Subject: call preventDefault() when the user is trying to enter a keyboard
 shortcut
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Keyboard shortcuts might conflict with Firefox’s "Find as you type" feature.
---
 ui/static/js.go                  | 12 ++++++------
 ui/static/js/keyboard_handler.js | 15 +++++++++++----
 2 files changed, 17 insertions(+), 10 deletions(-)

(limited to 'ui')

diff --git a/ui/static/js.go b/ui/static/js.go
index bc59847..b1b3d32 100644
--- a/ui/static/js.go
+++ b/ui/static/js.go
@@ -27,13 +27,13 @@ if(this.touch.element!==null){let distance=Math.abs(this.calculateDistance());if
 this.touch.element.style.opacity=1;this.touch.element.style.transform="none";}
 this.reset();}
 listen(){let elements=document.querySelectorAll(".touch-item");let hasPassiveOption=DomHelper.hasPassiveEventListenerOption();elements.forEach((element)=>{element.addEventListener("touchstart",(e)=>this.onTouchStart(e),hasPassiveOption?{passive:true}:false);element.addEventListener("touchmove",(e)=>this.onTouchMove(e),hasPassiveOption?{passive:false}:false);element.addEventListener("touchend",(e)=>this.onTouchEnd(e),hasPassiveOption?{passive:true}:false);element.addEventListener("touchcancel",()=>this.reset(),hasPassiveOption?{passive:true}:false);});let entryContentElement=document.querySelector(".entry-content");if(entryContentElement){let doubleTapTimers={previous:null,next:null};const detectDoubleTap=(doubleTapTimer,event)=>{const timer=doubleTapTimers[doubleTapTimer];if(timer===null){doubleTapTimers[doubleTapTimer]=setTimeout(()=>{doubleTapTimers[doubleTapTimer]=null;},200);}else{event.preventDefault();goToPage(doubleTapTimer);}};entryContentElement.addEventListener("touchend",(e)=>{if(e.changedTouches[0].clientX>=(entryContentElement.offsetWidth/2)){detectDoubleTap("next",e);}else{detectDoubleTap("previous",e);}},hasPassiveOption?{passive:false}:false);entryContentElement.addEventListener("touchmove",(e)=>{Object.keys(doubleTapTimers).forEach(timer=>doubleTapTimers[timer]=null);});}}}
-class KeyboardHandler{constructor(){this.queue=[];this.shortcuts={};}
-on(combination,callback){this.shortcuts[combination]=callback;}
-listen(){document.onkeydown=(event)=>{if(this.isEventIgnored(event)||this.isModifierKeyDown(event)){return;}
-let key=this.getKey(event);this.queue.push(key);for(let combination in this.shortcuts){let keys=combination.split(" ");if(keys.every((value,index)=>value===this.queue[index])){this.queue=[];this.shortcuts[combination](event);return;}
+class KeyboardHandler{constructor(){this.queue=[];this.shortcuts={};this.triggers=[];}
+on(combination,callback){this.shortcuts[combination]=callback;this.triggers.push(combination.split(" ")[0]);}
+listen(){document.onkeydown=(event)=>{let key=this.getKey(event);if(this.isEventIgnored(event,key)||this.isModifierKeyDown(event)){return;}else{event.preventDefault();}
+this.queue.push(key);for(let combination in this.shortcuts){let keys=combination.split(" ");if(keys.every((value,index)=>value===this.queue[index])){this.queue=[];this.shortcuts[combination](event);return;}
 if(keys.length===1&&key===keys[0]){this.queue=[];this.shortcuts[combination](event);return;}}
 if(this.queue.length>=2){this.queue=[];}};}
-isEventIgnored(event){return event.target.tagName==="INPUT"||event.target.tagName==="TEXTAREA";}
+isEventIgnored(event,key){return event.target.tagName==="INPUT"||event.target.tagName==="TEXTAREA"||(this.queue.length<1&&!this.triggers.includes(key));}
 isModifierKeyDown(event){return event.getModifierState("Control")||event.getModifierState("Alt")||event.getModifierState("Meta");}
 getKey(event){const mapping={'Esc':'Escape','Up':'ArrowUp','Down':'ArrowDown','Left':'ArrowLeft','Right':'ArrowRight'};for(let key in mapping){if(mapping.hasOwnProperty(key)&&key===event.key){return mapping[key];}}
 return event.key;}}
@@ -105,6 +105,6 @@ if("serviceWorker"in navigator){let scriptElement=document.getElementById("servi
 }
 
 var JavascriptsChecksums = map[string]string{
-	"app": "3e73bb4f1be3c679e59dcf91560efdf8646d7d549e682e5ad83f3bb1a6eeeff7",
+	"app": "ef0f82521c4b721401ee093f08788dd1416fd461bc4023ef6f81f2fa813aed73",
 	"sw":  "55fffa223919cc18572788fb9c62fccf92166c0eb5d3a1d6f91c31f24d020be9",
 }
diff --git a/ui/static/js/keyboard_handler.js b/ui/static/js/keyboard_handler.js
index ecf1f44..718a4ee 100644
--- a/ui/static/js/keyboard_handler.js
+++ b/ui/static/js/keyboard_handler.js
@@ -2,19 +2,23 @@ class KeyboardHandler {
     constructor() {
         this.queue = [];
         this.shortcuts = {};
+        this.triggers = [];
     }
 
     on(combination, callback) {
         this.shortcuts[combination] = callback;
+        this.triggers.push(combination.split(" ")[0]);
     }
 
     listen() {
         document.onkeydown = (event) => {
-            if (this.isEventIgnored(event) || this.isModifierKeyDown(event)) {
+            let key = this.getKey(event);
+            if (this.isEventIgnored(event, key) || this.isModifierKeyDown(event)) {
                 return;
+            } else {
+                event.preventDefault();
             }
 
-            let key = this.getKey(event);
             this.queue.push(key);
 
             for (let combination in this.shortcuts) {
@@ -39,8 +43,11 @@ class KeyboardHandler {
         };
     }
 
-    isEventIgnored(event) {
-        return event.target.tagName === "INPUT" || event.target.tagName === "TEXTAREA";
+    isEventIgnored(event, key) {
+        return event.target.tagName === "INPUT" ||
+            event.target.tagName === "TEXTAREA" ||
+            (this.queue.length < 1 && !this.triggers.includes(key));
+
     }
 
     isModifierKeyDown(event) {
-- 
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