luci-base, themes: add tooltip helpers & styles

Add the required JS and CSS infrastructure to support rich hover/focus
tooltips for element.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

5 files changed, 93 insertions, 13 deletions

diff --git a/modules/luci-base/htdocs/luci-static/resources/cbi.js b/modules/luci-base/htdocs/luci-static/resources/cbi.js
index b1fc26c74..b92b86f52 100644
--- a/modules/luci-base/htdocs/luci-static/resources/cbi.js
+++ b/modules/luci-base/htdocs/luci-static/resources/cbi.js
@@ -2191,6 +2191,58 @@ function cbi_update_table(table, data, placeholder) {
 	});
 }
 
+var tooltipDiv = null, tooltipTimeout = null;
+
+function showTooltip(ev) {
+	if (!matchesElem(ev.target, '[data-tooltip]'))
+		return;
+
+	if (tooltipTimeout !== null) {
+		window.clearTimeout(tooltipTimeout);
+		tooltipTimeout = null;
+	}
+
+	var rect = ev.target.getBoundingClientRect(),
+	    x = rect.left              + window.pageXOffset,
+	    y = rect.top + rect.height + window.pageYOffset;
+
+	tooltipDiv.className = 'cbi-tooltip';
+	tooltipDiv.innerHTML = '▲ ';
+	tooltipDiv.firstChild.data += ev.target.getAttribute('data-tooltip');
+
+	if (ev.target.hasAttribute('data-tooltip-style'))
+		tooltipDiv.classList.add(ev.target.getAttribute('data-tooltip-style'));
+
+	if ((y + tooltipDiv.offsetHeight) > (window.innerHeight + window.pageYOffset)) {
+		y -= (tooltipDiv.offsetHeight + ev.target.offsetHeight);
+		tooltipDiv.firstChild.data = '▼ ' + tooltipDiv.firstChild.data.substr(2);
+	}
+
+	tooltipDiv.style.top = y + 'px';
+	tooltipDiv.style.left = x + 'px';
+	tooltipDiv.style.opacity = 1;
+}
+
+function hideTooltip(ev) {
+	if (ev.target === tooltipDiv || ev.relatedTarget === tooltipDiv)
+		return;
+
+	if (tooltipTimeout !== null) {
+		window.clearTimeout(tooltipTimeout);
+		tooltipTimeout = null;
+	}
+
+	tooltipDiv.style.opacity = 0;
+	tooltipTimeout = window.setTimeout(function() { tooltipDiv.removeAttribute('style'); }, 250);
+}
+
 document.addEventListener('DOMContentLoaded', function() {
+	tooltipDiv = document.body.appendChild(E('div', { 'class': 'cbi-tooltip' }));
+
+	document.addEventListener('mouseover', showTooltip, true);
+	document.addEventListener('mouseout', hideTooltip, true);
+	document.addEventListener('focus', showTooltip, true);
+	document.addEventListener('blur', hideTooltip, true);
+
 	document.querySelectorAll('.table').forEach(cbi_update_table);
 });
diff --git a/themes/luci-theme-bootstrap/htdocs/luci-static/bootstrap/cascade.css b/themes/luci-theme-bootstrap/htdocs/luci-static/bootstrap/cascade.css
index a30dc45b7..690fd2ad4 100644
--- a/themes/luci-theme-bootstrap/htdocs/luci-static/bootstrap/cascade.css
+++ b/themes/luci-theme-bootstrap/htdocs/luci-static/bootstrap/cascade.css
@@ -1168,7 +1168,8 @@ footer {
 .btn.info,
 .alert-message.info,
 .btn.info:hover,
-.alert-message.info:hover {
+.alert-message.info:hover,
+.cbi-tooltip.error, .cbi-tooltip.success, .cbi-tooltip.info {
 	color: #fff;
 }
 
@@ -1180,25 +1181,26 @@ footer {
 .btn.danger,
 .alert-message.danger,
 .btn.error,
-.alert-message.error {
+.alert-message.error,
+.cbi-tooltip.error {
 	background: linear-gradient(to bottom, #ee5f5b, #c43c35) repeat-x;
 	text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
 	border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
 }
 
-.btn.success, .alert-message.success {
+.btn.success, .alert-message.success, .cbi-tooltip.success {
 	background: linear-gradient(to bottom, #62c462, #57a957) repeat-x;
 	text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
 	border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
 }
 
-.btn.info, .alert-message.info {
+.btn.info, .alert-message.info, .cbi-tooltip.info {
 	background: linear-gradient(to bottom, #5bc0de, #339bb9) repeat-x;
 	text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
 	border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
 }
 
-.alert-message.notice {
+.alert-message.notice, .cbi-tooltip.notice {
 	background: linear-gradient(to bottom, #efefef, #fefefe) repeat-x;
 	text-shadow: 0 -1px 0 rgba(255, 255, 255, 0.25);
 	border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -1491,8 +1493,13 @@ select + .cbi-button {
 	position: absolute;
 	z-index: 1000;
 	left: -1000px;
+	box-shadow: 0 0 2px #ccc;
+	border-radius: 3px;
+	background: #fff;
+	white-space: pre;
+	padding: 2px 5px;
 	opacity: 0;
-	transition: opacity .25s ease-out;
+	transition: opacity .25s ease-in;
 }
 
 .cbi-tooltip-container:hover .cbi-tooltip:not(:empty) {
diff --git a/themes/luci-theme-freifunk-generic/htdocs/luci-static/freifunk-generic/cascade.css b/themes/luci-theme-freifunk-generic/htdocs/luci-static/freifunk-generic/cascade.css
index 3e1b1cd2f..b9ac0f033 100644
--- a/themes/luci-theme-freifunk-generic/htdocs/luci-static/freifunk-generic/cascade.css
+++ b/themes/luci-theme-freifunk-generic/htdocs/luci-static/freifunk-generic/cascade.css
@@ -156,12 +156,17 @@ a img {
 	color: #000;
 }
 
-.alert-message.notice {
+.alert-message, .cbi-tooltip.error {
+	background: #fee;
+	color: #a22;
+}
+
+.alert-message.notice, .cbi-tooltip.notice {
 	background: linear-gradient(#ccc 0%, #eee 100%);
 	color: #4a6b7c;
 }
 
-.alert-message.warning {
+.alert-message.warning, .cbi-tooltip.warning {
 	background: linear-gradient(#dda 0%, #dd8 100%);
 	color: #c00;
 }
@@ -1354,6 +1359,10 @@ td.cbi-value-error {
 	position: absolute;
 	z-index: 1000;
 	left: -1000px;
+	border-radius: 3px;
+	background: #fff;
+	padding: 2px 5px;
+	white-space: pre;
 	opacity: 0;
 	transition: opacity .25s ease-out;
 	pointer-events: none;
diff --git a/themes/luci-theme-material/htdocs/luci-static/material/cascade.css b/themes/luci-theme-material/htdocs/luci-static/material/cascade.css
index 6961bfe2d..a4d71eeb6 100644
--- a/themes/luci-theme-material/htdocs/luci-static/material/cascade.css
+++ b/themes/luci-theme-material/htdocs/luci-static/material/cascade.css
@@ -291,7 +291,7 @@ header {
 }
 
 header > .fill > .container {
-    padding-top: 0.25rem; 
+    padding-top: 0.25rem;
     padding-right: 1rem;
     padding-bottom: 0.25rem;
     display: flex;
@@ -1481,6 +1481,10 @@ small {
     position: absolute;
     z-index: 1000;
     left: -1000px;
+    border-radius: 3px;
+    background: #fff;
+    padding: 2px 5px;
+    white-space: pre;
     opacity: 0;
     transition: opacity .25s ease-out;
     pointer-events: none;
diff --git a/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css b/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
index 5becfc5ba..94d6b5729 100644
--- a/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
+++ b/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
@@ -231,18 +231,22 @@ hr {
 	padding: .5em;
 	border-radius: 3px;
 	border: 1px solid #a22;
-	color: #a22;
-	background: #fee;
 	margin: 0 0 .5em 0;
 }
 
-.alert-message.notice {
+.alert-message, .cbi-tooltip.error {
+	border-color: #a22;
+	background: #fee;
+	color: #a22;
+}
+
+.alert-message.notice, .cbi-tooltip.notice {
 	border-color: #15a;
 	background: #e6f6ff;
 	color: #15a;
 }
 
-.alert-message.warning {
+.alert-message.warning, .cbi-tooltip.warning {
 	border-color: #ed5;
 	background: #fe9;
 	color: #650;
@@ -1173,6 +1177,10 @@ select + .cbi-button {
 	position: absolute;
 	z-index: 1000;
 	left: -1000px;
+	border-radius: 3px;
+	background: #fff;
+	padding: 2px 5px;
+	white-space: pre;
 	opacity: 0;
 	transition: opacity .25s ease-out;
 	pointer-events: none;