move resize step search function to math.ts

src/lib/behavior/columnResizer/ContextualResizer.ts

@@ -23,7 +23,7 @@ class ContextualResizer {
         const leftSpace = leftVisibleColumn.getLeft() - visibleRange.getLeft();
         const rightSpace = visibleRange.getRight() - rightVisibleColumn.getRight();
 
-        const newWidth = ContextualResizer.findNextStep(
+        const newWidth = findMinPositive(
             [
                 visibleRange.getWidth(),
                 column.getWidth() + step,
@@ -73,7 +73,7 @@ class ContextualResizer {
         const leftOffScreen = leftOffScreenColumn === null ? 0 : leftOffScreenColumn.getWidth() + grid.config.gapsInnerHorizontal - unusedWidth;
         const rightOffScreen = rightOffScreenColumn === null ? 0 : rightOffScreenColumn.getWidth() + grid.config.gapsInnerHorizontal - unusedWidth;
 
-        const newWidth = ContextualResizer.findNextStep(
+        const newWidth = findMinPositive(
             [
                 visibleRange.getWidth(),
                 column.getWidth() - step,
@@ -90,17 +90,4 @@ class ContextualResizer {
         column.setWidth(newWidth, true);
         desktop.scrollCenterVisible(column);
     }
-
-    private static findNextStep(steps: number[], evaluate: (step: number) => number) {
-        let bestScore = Infinity;
-        let bestStep = undefined;
-        for (const step of steps) {
-            const score = evaluate(step);
-            if (score > 0 && score < bestScore) {
-                bestScore = score;
-                bestStep = step;
-            }
-        }
-        return bestStep;
-    }
 }

src/lib/utils/math.ts

@@ -29,6 +29,19 @@ function uniq<T>(sortedArray: T[]) {
     return filtered;
 }
 
+function findMinPositive<T>(items: T[], evaluate: (item: T) => number) {
+    let bestScore = Infinity;
+    let bestItem = undefined;
+    for (const item of items) {
+        const score = evaluate(item);
+        if (score > 0 && score < bestScore) {
+            bestScore = score;
+            bestItem = item;
+        }
+    }
+    return bestItem;
+}
+
 function rectEquals(a: QmlRect, b: QmlRect) {
     return a.x === b.x &&
         a.y === b.y &&