107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
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/*
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Open Tracker License
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Terms and Conditions
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Copyright (c) 1991-2000, Be Incorporated. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do
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so, subject to the following conditions:
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The above copyright notice and this permission notice applies to all licensees
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and shall be included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF TITLE, MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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BE INCORPORATED BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF, OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of Be Incorporated shall not be
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used in advertising or otherwise to promote the sale, use or other dealings in
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this Software without prior written authorization from Be Incorporated.
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Tracker(TM), Be(R), BeOS(R), and BeIA(TM) are trademarks or registered trademarks
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of Be Incorporated in the United States and other countries. Other brand product
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names are registered trademarks or trademarks of their respective holders.
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All rights reserved.
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*/
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#include "SlowMenu.h"
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BSlowMenu::BSlowMenu(const char *title, menu_layout layout)
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: BMenu(title, layout),
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fMenuBuilt(false)
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{
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}
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const int32 kItemsToAddChunk = 20;
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const bigtime_t kMaxTimeBuildingMenu = 200000;
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bool
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BSlowMenu::AddDynamicItem(add_state state)
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{
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if (fMenuBuilt)
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return false;
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if (state == B_ABORT) {
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ClearMenuBuildingState();
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return false;
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}
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if (state == B_INITIAL_ADD && !StartBuildingItemList()) {
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ClearMenuBuildingState();
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return false;
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}
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bigtime_t timeToBail = system_time() + kMaxTimeBuildingMenu;
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for (int32 count = 0; count < kItemsToAddChunk; count++) {
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if (!AddNextItem()) {
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fMenuBuilt = true;
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DoneBuildingItemList();
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ClearMenuBuildingState();
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return false;
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// done with menu, don't call again
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}
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if (system_time() > timeToBail)
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// we have been in here long enough, come back later
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break;
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}
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return true; // call me again, got more to show
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}
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bool
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BSlowMenu::StartBuildingItemList()
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{
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return true;
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}
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bool
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BSlowMenu::AddNextItem()
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{
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TRESPASS();
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// pure virtual, shouldn't be here
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return true;
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}
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void
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BSlowMenu::DoneBuildingItemList()
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{
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TRESPASS();
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// pure virtual, shouldn't be here
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}
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void
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BSlowMenu::ClearMenuBuildingState()
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{
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TRESPASS();
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// pure virtual, shouldn't be here
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}
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