Origin Identifier Value Map.

chrome/browser/content_settings/content_settings_origin_identifier_value_map.cc

+// Copyright (c) 2011 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.
+
+#include "chrome/browser/content_settings/content_settings_origin_identifier_value_map.h"
+
+#include "base/logging.h"
+#include "base/values.h"
+#include "googleurl/src/gurl.h"
+
+namespace content_settings {
+
+OriginIdentifierValueMap::OriginIdentifierValueMap() {}
+
+OriginIdentifierValueMap::~OriginIdentifierValueMap() {
+  Clear();
+}
+
+bool operator>(const OriginIdentifierValueMap::Entry& first,
+               const OriginIdentifierValueMap::Entry& second) {
+  // Compare item patterns.
+  if (first.item_pattern > second.item_pattern)
+    return true;
+  if (first.item_pattern < second.item_pattern)
+    return false;
+
+  // Compare top_level_frame patterns.
+  if (first.top_level_frame_pattern > second.top_level_frame_pattern)
+    return true;
+  return false;
+}
+
+Value* OriginIdentifierValueMap::GetValue(
+    const GURL& item_url,
+    const GURL& top_level_frame_url,
+    ContentSettingsType content_type,
+    const ResourceIdentifier& resource_identifier) const {
+  // Find best matching list entry.
+  OriginIdentifierValueMap::const_iterator best_match = entries_.end();
+  for (OriginIdentifierValueMap::const_iterator entry = entries_.begin();
+       entry != entries_.end();
+       ++entry) {
+    if (entry->item_pattern.Matches(item_url) &&
+        entry->top_level_frame_pattern.Matches(top_level_frame_url) &&
+        entry->content_type == content_type &&
+        entry->identifier == resource_identifier) {
+      if (best_match == entries_.end() || *entry > *best_match) {
+        best_match = entry;
+      }
+    }
+  }
+  if (best_match != entries_.end())
+    return best_match->value.get();
+  return NULL;
+}
+
+void OriginIdentifierValueMap::SetValue(
+    const ContentSettingsPattern& item_pattern,
+    const ContentSettingsPattern& top_level_frame_pattern,
+    ContentSettingsType content_type,
+    const ResourceIdentifier& resource_identifier,
+    Value* value) {
+  OriginIdentifierValueMap::iterator list_entry =
+      FindEntry(item_pattern,
+                top_level_frame_pattern,
+                content_type,
+                resource_identifier);
+  if (list_entry == entries_.end()) {
+    // No matching list entry found. Add a new entry to the list.
+    entries_.insert(list_entry, Entry(item_pattern,
+                                      top_level_frame_pattern,
+                                      content_type,
+                                      resource_identifier,
+                                      value));
+  } else {
+    // Update the list entry.
+    list_entry->value.reset(value);
+  }
+}
+
+void OriginIdentifierValueMap::DeleteValue(
+      const ContentSettingsPattern& item_pattern,
+      const ContentSettingsPattern& top_level_frame_pattern,
+      ContentSettingsType content_type,
+      const ResourceIdentifier& resource_identifier) {
+  OriginIdentifierValueMap::iterator entry_to_delete =
+      FindEntry(item_pattern,
+                top_level_frame_pattern,
+                content_type,
+                resource_identifier);
+  if (entry_to_delete != entries_.end()) {
+    entries_.erase(entry_to_delete);
+  }
+}
+
+void OriginIdentifierValueMap::Clear() {
+  // Delete all owned value objects.
+  /*
+  for (OriginIdentifierValueMap::iterator entry = entries_.begin();
+       entry != entries_.end();
+       ++entry) {
+    delete entry->value;
+  }
+  */
+  entries_.clear();
+}
+
+OriginIdentifierValueMap::iterator OriginIdentifierValueMap::DeleteValue(
+    OriginIdentifierValueMap::iterator entry) {
+  return entries_.erase(entry);
+}
+
+OriginIdentifierValueMap::iterator OriginIdentifierValueMap::FindEntry(
+      const ContentSettingsPattern& item_pattern,
+      const ContentSettingsPattern& top_level_frame_pattern,
+      ContentSettingsType content_type,
+      const ResourceIdentifier& resource_identifier) {
+  for (OriginIdentifierValueMap::iterator entry = entries_.begin();
+       entry != entries_.end();
+       ++entry) {
+    if (item_pattern == entry->item_pattern &&
+        top_level_frame_pattern == entry->top_level_frame_pattern &&
+        content_type == entry->content_type &&
+        resource_identifier == entry->identifier) {
+      return entry;
+    }
+  }
+  return entries_.end();
+}
+
+}  // namespace content_settings