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Diffstat (limited to 'chrome/browser/history_view.h')
| -rw-r--r-- | chrome/browser/history_view.h | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/chrome/browser/history_view.h b/chrome/browser/history_view.h deleted file mode 100644 index 35c9db3..0000000 --- a/chrome/browser/history_view.h +++ /dev/null @@ -1,217 +0,0 @@ -// Copyright (c) 2006-2008 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. - -// This view displays a list of historical page visits. It requires a -// BaseHistoryModel to provide the information that will be shown. - -#ifndef CHROME_BROWSER_HISTORY_VIEW_H_ -#define CHROME_BROWSER_HISTORY_VIEW_H_ - -#include <vector> - -#include "chrome/browser/history_model.h" -#include "chrome/views/link.h" -#include "chrome/views/scroll_view.h" - -class PageNavigator; -class HistoryItemRenderer; -class BaseHistoryModel; -class SearchableUIContainer; - -class HistoryView : public views::View, - public BaseHistoryModelObserver, - public views::LinkController, - views::VariableRowHeightScrollHelper::Controller { - public: - HistoryView(SearchableUIContainer* container, - BaseHistoryModel* model, - PageNavigator* navigator); - virtual ~HistoryView(); - - // Returns true if this view is currently visible to the user. - bool IsVisible(); - - // Overridden for layout purposes. - virtual void DidChangeBounds(const gfx::Rect& previous, - const gfx::Rect& current); - virtual void Layout(); - - virtual bool GetFloatingViewIDForPoint(int x, int y, int* id); - - // Overriden for focus traversal. - virtual bool EnumerateFloatingViews( - views::View::FloatingViewPosition position, - int starting_id, int* id); - virtual views::View* ValidateFloatingViewForID(int id); - - // Render the visible area. - virtual void Paint(ChromeCanvas* canvas); - - // BaseHistoryModelObserver implementation. - void ModelChanged(bool result_set_changed); - void ModelBeginWork(); - void ModelEndWork(); - - // Returns the entry height, varies with font-height to prevent clipping. - int GetEntryHeight(); - - // Sets whether the delete controls are visible. - void SetShowDeleteControls(bool show_delete_controls); - - // We expose the PageNavigator so history entries can cause navigations - // directly. - PageNavigator* navigator() const { return navigator_; } - - // Scrolling. - virtual int GetPageScrollIncrement(views::ScrollView* scroll_view, - bool is_horizontal, bool is_positive); - virtual int GetLineScrollIncrement(views::ScrollView* scroll_view, - bool is_horizontal, bool is_positive); - virtual views::VariableRowHeightScrollHelper::RowInfo GetRowInfo(int y); - - private: - // For any given break (see comments for BreakOffsets, below), we store the - // index of the item following the break, and whether or not the break - // corresponds to a day break or session break. - struct BreakValue { - int index; - bool day; - }; - - // The map of our breaks (see comments for BreakOffsets, below). - typedef std::map<int, BreakValue> BreakOffsets; - - // Ensures the renderers are valid. - void EnsureRenderer(); - - // Returns the bottom of the last entry. - int GetLastEntryMaxY(); - - // Returns the max view id. - int GetMaxViewID(); - - // Returns the y coordinate for the view with the specified floating view id, - // the index into the model of the specified view and whether the view is - // a delete control. - int GetYCoordinateForViewID(int view_id, - int* model_index, - bool* is_delete_control); - - // Invoked when the user clicks the delete previous visits link. - virtual void LinkActivated(views::Link* source, int event_flags); - - // Prompts the user to make sure they really want to delete, and if so - // deletes the day at the specified model index. - void DeleteDayAtModelIndex(int index); - - // Returns the number of delete controls shown before the specified iterator. - int CalculateDeleteOffset(const BreakOffsets::const_iterator& it); - - // Returns the width of the delete control, calculating if necessary. - int GetDeleteControlWidth(); - - // Calculates the bounds for the delete control given the specified y - // location. - gfx::Rect CalculateDeleteControlBounds(int base_y); - - // The "searchable view" container for this view. - SearchableUIContainer* container_; - - // The font used for the "n days" ago heading. - ChromeFont day_break_font_; - - // A "stamper"-style renderer for only painting the things that are - // in the current view. - HistoryItemRenderer* renderer_; - - // Used to render 'delete' controls. - scoped_ptr<views::Link> delete_renderer_; - - // Class that performs the navigation when the user clicks on a page. - PageNavigator* navigator_; - - // Pointer to the model that provides the contents of this view. - scoped_ptr<BaseHistoryModel> model_; - - // For laying out the potentially huge list of history entries, we - // cache the offsets of session and day breaks. - // - // Each entry in BreakOffsets is a pair, where the key is the y - // coordinate of a day heading and the value is a struct containing - // both the index of the first history entry after that day - // heading and a boolean value indicating whether the offset - // represents a day or session break (these display differently). - // - // This lets us quickly compute, for a given y value, how to lay out - // entries in the vicinity of that y value. - // - // Here's an example: - // 4 days ago <- key: the y coordinate of the top of this block - // +---------------- - // | history item #7 <- index: 7, the index of this history item - // +---------------- - // +---------------- - // | history item #8 - // +---------------- - // <- key: the y coordinate of this separator - // +---------------- - // | history item #9 <- index: 9, the index of this history item - // +---------------- - // +---------------- - // | history item #10 - // +---------------- - // 5 days ago <- key: the y coordinate of this block - // +---------------- - // | history item #11 <- index: 11 - // +---------------- - - // Each history item is represented as a floating view. In addition the - // the delete controls are represented as floating views. A ramification - // of this is that when the delete controls are displayed the view ids do - // not necessarily directly correspond to a model index. The following - // example shows the view ids and corresponding model index. - // - // delete <- view_id=10 - // +---------------- - // | history item #7 <- view_id=11, model_index=10 - // +---------------- - // +---------------- - // | history item #8 <- view_id=12, model_index=11 - // +---------------- - // delete <- view_id=13 - // +---------------- - // | history item #9 <- view_id=14, model_index=12 - // +---------------- - // - BreakOffsets break_offsets_; - - // Retrieve the nearest BreakOffsets less than or equal to the given y. - // Another way of looking at this is that it fetches the BreakOffsets - // entry that heads the section containing y. - BreakOffsets::iterator GetBreakOffsetIteratorForY(int y); - - int GetBreakOffsetHeight(BreakValue value); - - views::VariableRowHeightScrollHelper scroll_helper_; - - // Whether we are showing search results. - bool show_results_; - - // The loading state of the model. - bool loading_; - - // Whether we're showing delete controls. - bool show_delete_controls_; - - // How tall a single line of text is. - int line_height_; - - // Width needed for the delete control. Calculated in GetDeleteControlWidth. - int delete_control_width_; - - DISALLOW_EVIL_CONSTRUCTORS(HistoryView); -}; - -#endif // CHROME_BROWSER_HISTORY_VIEW_H_ - |