From c08dffa744eb14365f5ffbc5adfdfbe694b7b5ac Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Fri, 31 Mar 2023 16:49:18 +0000
Subject: [PATCH] fix(timeline): Fix yaxis label color in dark mode (#3698)

- Render label as HTML instead of in the Canvas so that it picks up text color from CSS theme
- Update CSS styles of yaxis label to match chart title
- Update HTML rendering to support custom color overrides via inline styles

Fixes https://github.com/opensearch-project/OpenSearch-Dashboards/issues/2250

Signed-off-by: Josh Romero <rmerqg@amazon.com>
(cherry picked from commit 868c822cff73f5d320700b03903e600fcb1a0b31)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

# Conflicts:
#	CHANGELOG.md
---
 .../flot_charts/jquery_flot_axislabels.js                 | 6 ++++++
 .../vis_type_timeline/public/components/timeline_vis.scss | 8 ++++++--
 .../vis_type_timeline/server/series_functions/yaxis.js    | 2 +-
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/packages/osd-ui-shared-deps/flot_charts/jquery_flot_axislabels.js b/packages/osd-ui-shared-deps/flot_charts/jquery_flot_axislabels.js
index cda8038953c..a656bce50fa 100644
--- a/packages/osd-ui-shared-deps/flot_charts/jquery_flot_axislabels.js
+++ b/packages/osd-ui-shared-deps/flot_charts/jquery_flot_axislabels.js
@@ -159,6 +159,9 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
                       'Label" " class="axisLabels" style="position:absolute;">'
                       + this.opts.axisLabel + '</div>');
         this.plot.getPlaceholder().append(this.elem);
+        if (this.opts.axisLabelColour) {
+            this.elem.css('color', this.opts.axisLabelColour);
+        }
         if (this.position == 'top') {
             this.elem.css('left', box.left + box.width/2 - this.labelWidth/2 +
                           'px');
@@ -261,6 +264,9 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
                       'Label" style="position:absolute; ' +
                       this.transforms(offsets.degrees, offsets.x, offsets.y) +
                       '">' + this.opts.axisLabel + '</div>');
+        if (this.opts.axisLabelColour) {
+            this.elem.css('color', this.opts.axisLabelColour);
+        }
         this.plot.getPlaceholder().append(this.elem);
     };
 
diff --git a/src/plugins/vis_type_timeline/public/components/timeline_vis.scss b/src/plugins/vis_type_timeline/public/components/timeline_vis.scss
index cdcb4253eb1..290a0a8b74d 100644
--- a/src/plugins/vis_type_timeline/public/components/timeline_vis.scss
+++ b/src/plugins/vis_type_timeline/public/components/timeline_vis.scss
@@ -7,12 +7,16 @@
   // Custom Jquery FLOT / schema selectors
   // Cannot change at the moment
 
-  .chart-top-title {
+  .chart-top-title,
+  .axisLabels {
     @include euiFontSizeXS;
 
+    font-weight: $euiFontWeightBold;
+  }
+
+  .chart-top-title {
     flex: 0;
     text-align: center;
-    font-weight: $euiFontWeightBold;
   }
 
   .chart-canvas {
diff --git a/src/plugins/vis_type_timeline/server/series_functions/yaxis.js b/src/plugins/vis_type_timeline/server/series_functions/yaxis.js
index d5b4eebf128..66f38264965 100644
--- a/src/plugins/vis_type_timeline/server/series_functions/yaxis.js
+++ b/src/plugins/vis_type_timeline/server/series_functions/yaxis.js
@@ -143,7 +143,7 @@ export default new Chainable('yaxis', {
       myAxis.axisLabelFontSizePixels = 11;
       myAxis.axisLabel = label;
       myAxis.axisLabelColour = color;
-      myAxis.axisLabelUseCanvas = true;
+      myAxis.axisLabelUseCanvas = false;
 
       if (tickDecimals) {
         myAxis.tickDecimals = tickDecimals < 0 ? 0 : tickDecimals;