1 files changed, 100 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/util/GT_TooltipDataCache.java b/src/main/java/gregtech/api/util/GT_TooltipDataCache.java
new file mode 100644
index 0000000000..7844bb04fd
--- /dev/null
+++ b/src/main/java/gregtech/api/util/GT_TooltipDataCache.java
@@ -0,0 +1,100 @@
+package gregtech.api.util;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import gregtech.GT_Mod;
+import net.minecraft.util.StatCollector;
+
+public class GT_TooltipDataCache {
+
+    public static class TooltipData {
+        public List<String> text;
+        public List<String> shiftText;
+
+        public TooltipData(List<String> text, List<String> shiftText) {
+            this.text = text;
+            this.shiftText = shiftText;
+        }
+    }
+    private final Map<String, TooltipData> fetchedTooltipData = new HashMap<>();
+
+    /**
+     * Returns tooltip data respecting the user's configured verbosity levels, applying any formatting arguments.
+     * 
+     * @param key the key to lookup 
+     * @param args arguments for string formatting (prefer using positional arguments)
+     * @return The tooltip data the user asked for
+     */
+    public TooltipData getData(String key, Object... args) {
+        TooltipData tooltipData = fetchedTooltipData.get(key);
+        if (tooltipData == null) {
+            tooltipData = getUncachedTooltipData(key, args);
+            fetchedTooltipData.put(key, tooltipData);
+        }
+        return tooltipData;
+    }
+
+    /**
+     * Builds tooltip data respecting the user's configured verbosity levels, applying any formatting arguments.
+     * 
+     * @param key the key to lookup 
+     * @param args arguments for string formatting (prefer using positional arguments)
+     * @return The tooltip data the user asked for
+     */
+    private TooltipData getUncachedTooltipData(String key, Object... args) {
+        List<String> lines = getAllLines(key, args);
+        int normalLines = lines.size();
+        if (Math.max(GT_Mod.gregtechproxy.mTooltipVerbosity, GT_Mod.gregtechproxy.mTooltipShiftVerbosity) >= 3) {
+            lines.addAll(getAllLines(key + ".extended", args)); // Are extended lines enabled? If so add them to the lines
+        }
+        if (lines.size() == 0) {
+            lines.add(key); // Fallback in case no lines could be found at all
+        }
+        return new TooltipData(
+            lines.subList(0, getVerbosityIndex(GT_Mod.gregtechproxy.mTooltipVerbosity, normalLines, lines.size())),
+            lines.subList(0, getVerbosityIndex(GT_Mod.gregtechproxy.mTooltipShiftVerbosity, normalLines, lines.size())));
+    }
+
+    /**
+     * Gets all the lines for the given key and every other subsequent consecutive key with a .n suffix, n in {1,2,3...}
+     * 
+     * @param key the key to lookup 
+     * @param args arguments for string formatting (prefer using positional arguments)
+     * @return The lines for the key and all of it's subkeys
+     */
+    private List<String> getAllLines(String key,  Object... args) {
+        List<String> lines = new ArrayList<String>();
+        String keyToLookup = key;
+        int i = 1; // First loop has no .number postfix
+        while (StatCollector.canTranslate(keyToLookup)) {
+            lines.add(StatCollector.translateToLocalFormatted(keyToLookup, args));
+            keyToLookup = key + "." + i++;
+        }
+        return lines;
+    }
+
+    /**
+     * Determines how many lines from a tooltip to include from the full line list to respect a given verbosity level.
+     * 
+     * @param tooltipVerbosity the verbosity level we're applying
+     * @param defaultIndex return if tooltipVerbosity is 2
+     * @param maxIndex return if tooltipVerbosity is greater than 2
+     * @return verbosity appropriate index
+     */
+    private static int getVerbosityIndex(int tooltipVerbosity, int defaultIndex, int maxIndex) {
+        int index;
+        if (tooltipVerbosity < 1) {
+            index = 0;
+        } else if (tooltipVerbosity == 1) {
+            index = 1;
+        } else if (tooltipVerbosity == 2) {
+            index = defaultIndex;
+        } else {
+            index = maxIndex;
+        }
+        return index;
+    }
+}