fix(events): render debug bar restore button outside the container it un-hides (#3345)

changelog.d/debugbar-restore-button.fixed.md

@@ -0,0 +1 @@
+- Debug bar: the minimized "Debug" restore button now renders after clicking the X. The `#wdb-minimized` button was nested inside the `#wheels-debugbar` container that `wdbMinimize()` hides with `display:none`, so it could never appear and the bar stayed gone for the whole browser session (manual `sessionStorage` cleanup was the only recovery). It is now a sibling of the container, so minimizing shows the restore button bottom-right and clicking it brings the bar back ([#3345](https://github.com/wheels-dev/wheels/issues/3345)).

vendor/wheels/events/onrequestend/debug.cfm

@@ -489,15 +489,17 @@ OR (StructKeyExists(url, "format") AND ListFindNoCase("json,xml,csv,pdf", url.fo
 </div>
 </cfif>
 
+</div>
+
 <!--- ============ MINIMIZED BUTTON ============ --->
-<div id="wdb-minimized" style="display:none;position:fixed;bottom:8px;right:8px;z-index:99999;">
+<!--- Sibling of ##wheels-debugbar on purpose: wdbMinimize() sets the container to display:none, and a descendant of a display:none element can never render, so nesting this inside the container makes the restore button unreachable (issue ##3345). It is independently position:fixed. The script include stays below so both elements exist when debugbar.js's load-time wdbMinimize() re-invocation runs. --->
+<div id="wdb-minimized" style="all:initial;display:none;position:fixed;bottom:8px;right:8px;z-index:99999;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,sans-serif;">
 	<button onclick="wdbRestore()" style="background:##1e1e2e;border:1px solid ##45475a;border-radius:8px;padding:6px 10px;cursor:pointer;color:##89b4fa;font-size:12px;font-family:inherit;display:flex;align-items:center;gap:4px;box-shadow:0 2px 8px rgba(0,0,0,.3);">
 		<svg viewBox="0 0 153 18" xmlns="http://www.w3.org/2000/svg" style="width:20px;height:5px;"><path d="M15.71 12c1.65 0 2.99 1.34 2.99 3s-1.34 3-2.99 3-2.99-1.34-2.99-3v-1.27c0-.42-.15-.79-.45-1.09L6.1 6.45c-.3-.3-.66-.45-1.09-.45H3.75c-1.65 0-2.99-1.34-2.99-3S2.09 0 3.74 0s2.99 1.34 2.99 3v1.27c0 .42.15.79.45 1.09l6.17 6.19c.3.3.66.45 1.09.45z" fill="##f38ba8"/></svg>
 		Debug
 	</button>
 </div>
 
 <script><cfinclude template="/wheels/public/assets/js/debugbar.js"></script>
-</div>
 </cfoutput></cfsavecontent><cfoutput>#ReReplace(local.wdbHtml, "(?m)>\s+<", "><", "all")#</cfoutput>
 <!--- cfformat-ignore-end --->

vendor/wheels/tests/specs/events/DebugBarMinimizedButtonSpec.cfc

@@ -0,0 +1,81 @@
+component extends="wheels.WheelsTest" {
+
+	function run() {
+		describe("debug bar minimized restore button placement", () => {
+			// wdbMinimize() (public/assets/js/debugbar.js) sets #wheels-debugbar to
+			// display:none and #wdb-minimized to display:block. A descendant of a
+			// display:none element is never rendered regardless of its own display
+			// value, so the "Debug" restore button must be a SIBLING of the
+			// container, not a child — otherwise clicking the X hides the bar for
+			// the whole browser session with no visible recovery (issue #3345).
+			// This spec renders debug.cfm and asserts structurally that
+			// id="wdb-minimized" appears only after the div balance for
+			// #wheels-debugbar has returned to zero (sibling, not descendant).
+			it("renders the wdb-minimized button as a sibling of the debug bar container", () => {
+				var priorReqWheels = StructKeyExists(request, "wheels") ? Duplicate(request.wheels) : {};
+
+				try {
+					if (!StructKeyExists(request, "wheels")) {
+						request.wheels = {};
+					}
+					request.wheels.execution = {total = 0};
+					request.wheels.params = {controller = "wheels", action = "tests", route = ""};
+
+					// debug.cfm bails out (cfexit) when url.format is one of
+					// json/xml/csv/pdf so it never breaks an API response. The
+					// test runner is hit with format=json — clear it for the
+					// duration of the include so the template renders.
+					var hadUrlFormat = StructKeyExists(url, "format");
+					var priorUrlFormat = hadUrlFormat ? url.format : "";
+					if (hadUrlFormat) {
+						StructDelete(url, "format");
+					}
+
+					var output = "";
+					try {
+						output = application.wo.$includeAndReturnOutput($template = "/wheels/events/onrequestend/debug.cfm");
+					} finally {
+						if (hadUrlFormat) {
+							url.format = priorUrlFormat;
+						}
+					}
+
+					var containerPos = FindNoCase('id="wheels-debugbar"', output);
+					expect(containerPos).toBeGT(0, "the ##wheels-debugbar container should render");
+
+					var minimizedPos = FindNoCase('id="wdb-minimized"', output);
+					expect(minimizedPos).toBeGT(0, "the ##wdb-minimized restore button should render");
+
+					// Walk <div / </div tokens starting just inside the container's
+					// opening tag and find where its balance returns to zero (the
+					// position of the container's own closing tag).
+					var depth = 1;
+					var pos = containerPos;
+					var containerClosePos = 0;
+					while (depth > 0) {
+						var nextOpen = FindNoCase("<div", output, pos + 1);
+						var nextClose = FindNoCase("</div", output, pos + 1);
+						expect(nextClose).toBeGT(0, "unbalanced markup: ##wheels-debugbar never closes");
+						if (nextOpen > 0 && nextOpen < nextClose) {
+							depth += 1;
+							pos = nextOpen;
+						} else {
+							depth -= 1;
+							pos = nextClose;
+							containerClosePos = nextClose;
+						}
+					}
+
+					expect(minimizedPos).toBeGT(
+						containerClosePos,
+						"##wdb-minimized must render AFTER ##wheels-debugbar closes (sibling, not descendant) — " &
+						"nested inside the container, wdbMinimize()'s display:none makes the restore button unreachable (##3345)"
+					);
+				} finally {
+					request.wheels = priorReqWheels;
+				}
+			});
+		});
+	}
+
+}