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-rw-r--r--frontends/cocoa/ScrollableView.m71
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diff --git a/frontends/cocoa/ScrollableView.m b/frontends/cocoa/ScrollableView.m
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+/*
+ * Copyright 2011 Sven Weidauer <sven.weidauer@gmail.com>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import "cocoa/ScrollableView.h"
+
+@interface ScrollableView ()
+
+- (void) frameChangeNotification: (NSNotification *) note;
+
+@end
+
+@implementation ScrollableView
+@synthesize minimumSize;
+
+- (void) setMinimumSize: (NSSize)newSize
+{
+ minimumSize = newSize;
+ [self adjustFrame];
+}
+
+- (void) adjustFrame
+{
+ NSSize frameSize = [[self superview] frame].size;
+ [self setFrameSize: NSMakeSize( MAX( minimumSize.width, frameSize.width ),
+ MAX( minimumSize.height, frameSize.height ) )];
+}
+
+- (void) frameChangeNotification: (NSNotification *) note
+{
+ [self adjustFrame];
+}
+
+- (void) viewDidMoveToSuperview
+{
+ if (observedSuperview) {
+ [[NSNotificationCenter defaultCenter]
+ removeObserver: self
+ name: NSViewFrameDidChangeNotification
+ object: observedSuperview];
+ observedSuperview = nil;
+ }
+
+ NSView *newSuperView = [self superview];
+
+ if (nil != newSuperView) {
+ observedSuperview = newSuperView;
+ [[NSNotificationCenter defaultCenter]
+ addObserver: self
+ selector: @selector(frameChangeNotification:)
+ name: NSViewFrameDidChangeNotification
+ object: observedSuperview];
+ [observedSuperview setPostsFrameChangedNotifications: YES];
+ }
+}
+
+@end