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+Ext.define('saas.override.grid.buffer.BufferedRenderer', {
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+ override: 'Ext.grid.plugin.BufferedRenderer',
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+
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+ setViewSize: function(viewSize, fromLockingPartner) {
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+ var me = this,
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+ store = me.store,
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+ view = me.view,
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+ ownerGrid,
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+ rows = view.all,
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+ elCount = rows.getCount(),
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+ storeCount = store.getCount(),
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+ start, end,
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+ lockingPartner = me.view.lockingPartner && me.view.lockingPartner.bufferedRenderer,
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+ diff = elCount - viewSize,
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+ oldTop = 0,
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+ maxIndex = Math.max(0, storeCount - 1),
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+ // This is which end is closer to being visible therefore must be the first to have rows added
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+ // or the opposite end from which rows get removed if shrinking the view.
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+ pointyEnd = Ext.Number.sign((me.getFirstVisibleRowIndex() - rows.startIndex) - (rows.endIndex - me.getLastVisibleRowIndex()));
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+ // Synchronize view sizes
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+ if (lockingPartner && !fromLockingPartner) {
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+ lockingPartner.setViewSize(viewSize, true);
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+ }
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+ diff = elCount - viewSize;
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+ if (diff) {
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+ // Must be set for getFirstVisibleRowIndex to work
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+ me.scrollTop = me.scroller ? me.scroller.getPosition().y : 0;
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+ me.viewSize = viewSize;
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+ if (store.isBufferedStore) {
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+ store.setViewSize(viewSize);
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+ }
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+ // If a store loads before we have calculated a viewSize, it loads me.defaultViewSize records.
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+ // This may be larger or smaller than the final viewSize so the store needs adjusting when the view size is calculated.
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+ if (elCount) {
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+ // New start index should be current start index unless that's now too close to the end of the store
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+ // to yield a full view, in which case work back from the end of the store.
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+ // Ensure we don't go negative.
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+ start = Math.max(0, Math.min(rows.startIndex, storeCount - viewSize));
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+ // New end index works forward from the new start index ensuring we don't walk off the end
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+ end = Math.min(start + viewSize - 1, maxIndex);
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+ // Only do expensive adding or removal if range is not already correct
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+ if (start === rows.startIndex && end === rows.endIndex) {
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+ // Needs rows adding to or bottom depending on which end is closest
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+ // to being visible (The pointy end)
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+ if (diff < 0) {
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+ me.handleViewScroll(pointyEnd);
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+ }
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+ } else {
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+ // While changing our visible range, the locking partner must not sync
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+ if (lockingPartner) {
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+ lockingPartner.disable();
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+ }
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+ // View must expand
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+ if (diff < 0) {
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+ // If it's *possible* to add rows...
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+ if (storeCount > viewSize && storeCount > elCount) {
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+ // Grab the render range with a view to appending and prepending
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+ // nodes to the top and bottom as necessary.
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+ // Store's getRange API always has been inclusive of endIndex.
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+ store.getRange(start, end, {
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+ callback: function(newRecords, start, end) {
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+ ownerGrid = view.ownerGrid;
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+ // Append if necessary
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+ if (end > rows.endIndex) {
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+ rows.scroll(Ext.Array.slice(newRecords, rows.endIndex + 1, Infinity), 1, 0);
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+ }
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+ // Prepend if necessary
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+ if (start < rows.startIndex) {
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+ oldTop = rows.first(true);
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+ rows.scroll(Ext.Array.slice(newRecords, 0, rows.startIndex - start), -1, 0);
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+ // We just added some rows to the top of the rendered block
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+ // We have to bump it up to keep the view stable.
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+ me.bodyTop -= oldTop.offsetTop;
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+ }
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+ me.setBodyTop(me.bodyTop);
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+ // The newly added rows must sync the row heights
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+ if (lockingPartner && !fromLockingPartner && (ownerGrid.syncRowHeight || ownerGrid.syncRowHeightOnNextLayout)) {
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+ lockingPartner.setViewSize(viewSize, true);
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+ ownerGrid.syncRowHeights();
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+ }
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+ }
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+ });
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+ } else // If not possible just refresh
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+ {
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+ me.refreshView(0);
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+ }
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+ } else // View size is contracting
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+ {
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+ // If removing from top, we have to bump the rendered block downwards
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+ // by the height of the removed rows.
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+ if (pointyEnd === 1) {
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+ oldTop = rows.item(rows.startIndex + diff, true).offsetTop;
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+ }
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+ // Clip the rows off the required end
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+ rows.clip(pointyEnd, diff);
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+ me.setBodyTop(me.bodyTop + oldTop);
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+ }
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+ if (lockingPartner) {
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+ lockingPartner.enable();
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+ }
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+ }
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+ }
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+ // Update scroll range
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+ me.refreshSize();
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+ }
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+ if(this.grid.xtype=='power-grid'){
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+ viewSize = 61
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+ }
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+ return viewSize;
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+ },
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+});
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+
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heqinwei