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ios/web/web_state/js/crw_js_invoke_parameter_queue.mm

Index: ios/web/web_state/js/crw_js_invoke_parameter_queue.mm
diff --git a/ios/web/web_state/js/crw_js_invoke_parameter_queue.mm b/ios/web/web_state/js/crw_js_invoke_parameter_queue.mm
new file mode 100644
index 0000000000000000000000000000000000000000..403bcb75a3975ee8d231bae906f58dd4f3134d2b
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+++ b/ios/web/web_state/js/crw_js_invoke_parameter_queue.mm
@@ -0,0 +1,99 @@
+// Copyright 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/web/web_state/js/crw_js_invoke_parameter_queue.h"
+
+#import "base/mac/scoped_nsobject.h"
+#include "url/gurl.h"
+
+@implementation CRWJSInvokeParameters {
+  base::scoped_nsobject<NSString> _commandString;
+  BOOL _userIsInteracting;
+  base::scoped_nsobject<NSString> _windowId;
+  GURL _originURL;
+}
+
+@synthesize userIsInteracting = _userIsInteracting;
+
+- (id)initWithCommandString:(NSString*)commandString
+          userIsInteracting:(BOOL)userIsInteracting
+                  originURL:(const GURL&)originURL
+                forWindowId:(NSString*)windowId {
+  if ((self = [super init])) {
+    _commandString.reset([commandString copy]);
+    _userIsInteracting = userIsInteracting;
+    _windowId.reset([windowId copy]);
+    _originURL = originURL;
+  }
+  return self;
+}
+
+- (NSString*)commandString {
+  return _commandString.get();
+}
+
+- (NSString*)windowId {
+  return _windowId.get();
+}
+
+- (const GURL&)originURL {
+  return _originURL;
+}
+
+@end
+
+@implementation CRWJSInvokeParameterQueue {
+  base::scoped_nsobject<NSMutableArray> _queue;
+}
+
+- (id)init {
+  if ((self = [super init])) {
+    // Under normal circumstainces there will be maximum one message queued.
+    _queue.reset([[NSMutableArray arrayWithCapacity:1] retain]);
+  }
+  return self;
+}
+
+- (BOOL)isEmpty {
+  return [_queue count] == 0;
+}
+
+- (NSUInteger)queueLength {
+  return [_queue count];
+}
+
+- (void)addCommandString:(NSString*)commandString
+       userIsInteracting:(BOOL)userIsInteracting
+               originURL:(const GURL&)originURL
+             forWindowId:(NSString*)windowId {
+  base::scoped_nsobject<CRWJSInvokeParameters> invokeParameters(
+      [[CRWJSInvokeParameters alloc] initWithCommandString:commandString
+                                         userIsInteracting:userIsInteracting
+                                                 originURL:originURL
+                                               forWindowId:windowId]);
+  [_queue addObject:invokeParameters];
+}
+
+- (void)removeCommandString:(NSString*)commandString {
+  NSMutableArray* commandsToRemove = [NSMutableArray array];
+  for (CRWJSInvokeParameters* params in _queue.get()) {
+    NSRange range =
+        [[params commandString] rangeOfString:commandString
+                                      options:NSCaseInsensitiveSearch];
+    if (range.location != NSNotFound)
+      [commandsToRemove addObject:params];
+  }
+  [_queue removeObjectsInArray:commandsToRemove];
+}
+
+- (CRWJSInvokeParameters*)popInvokeParameters {
+  if (![_queue count])
+    return nil;
+  CRWJSInvokeParameters* invokeParameters =
+      [[[_queue objectAtIndex:0] retain] autorelease];
+  [_queue removeObjectAtIndex:0];
+  return invokeParameters;
+}
+
+@end