RCFilters: Make the interface not jump around while loading

[lhc/web/wiklou.git] / resources / src / mediawiki.rcfilters / styles / mw.rcfilters.less

diff --git a/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.less b/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.less
index cc5ecd4..80aff74 100644 (file)
--- a/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.less
+++ b/resources/src/mediawiki.rcfilters/styles/mw.rcfilters.less
@@ -1,22 +1,31 @@
 @import 'mediawiki.mixins.animation';
 @import 'mw.rcfilters.mixins';
 
+@rcfilters-spinner-width: 70px;
+@rcfilters-head-min-height: 250px;
+@rcfilters-wl-head-min-height: 320px;
+
 // Corrections for the standard special page
 .client-js {
        .cloptions {
                border: 0;
        }
 
+       // Reserve space for the UI while it loads
        .rcfilters-head {
-               min-height: 200px;
+               min-height: @rcfilters-head-min-height;
+       }
+       // On the watchlist, reserve a bit more
+       .mw-special-Watchlist .rcfilters-head {
+               min-height: @rcfilters-wl-head-min-height;
+       }
 
-               &:not( .mw-rcfilters-ui-ready ) {
-                       opacity: 0.5;
-                       pointer-events: none;
+       body:not( .mw-rcfilters-ui-initialized ) .rcfilters-head {
+               opacity: 0.5;
+               pointer-events: none;
 
-                       .cloptions {
-                               display: none;
-                       }
+               .cloptions {
+                       display: none;
                }
        }
 
@@ -33,21 +42,27 @@
                        display: none;
                }
 
-               &:not( .mw-rcfilters-ui-ready ) {
-                       opacity: 0.5;
+               // Reserve space for the highlight circles
+               ul,
+               table.mw-enhanced-rc {
+                       .result-circle-margin();
                }
        }
 
+       body.mw-rcfilters-ui-loading .mw-changeslist {
+               opacity: 0.5;
+       }
+
        .rcfilters-spinner {
-               margin: -2em auto 0;
-               width: 70px;
-               opacity: 0.8;
                display: none;
-               white-space: nowrap;
+               position: absolute;
+               left: 50%;
+               width: @rcfilters-spinner-width;
+               // Make sure the middle of the spinner is centered, rather than its left edge
+               margin-left: -@rcfilters-spinner-width/2;
 
-               &:not( .mw-rcfilters-ui-ready ) {
-                       display: block;
-               }
+               opacity: 0.8;
+               white-space: nowrap;
 
                & .rcfilters-spinner-bounce,
                &:before,
@@ -69,12 +84,27 @@
                        .animation-delay( 0s );
                }
        }
+       body:not( .mw-rcfilters-ui-initialized ) .rcfilters-spinner {
+               display: block;
+               // When initializing, display the spinner on top of the area where the UI will appear
+               margin-top: -@rcfilters-head-min-height/2;
+       }
+       body.mw-rcfilters-ui-loading .rcfilters-spinner {
+               display: block;
+               // When loading new results, display the spinner on top of the results area
+               margin-top: 2em;
+       }
 
        #contentSub,
-       .watchlistDetails,
        form#mw-watchlist-resetbutton {
                display: none;
        }
+
+       // Make the watchlist-details message display while loading, but make it not take up any
+       // space. This makes the min-height trick work better.
+       .watchlistDetails {
+               float: left;
+       }
 }
 
 .mw-rcfilters-staticfilters-selected {