RecentApps class that manages the system list of recently
launched applications. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1714 a95241bf-73f2-0310-859d-f6bbb57e9c96
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src/servers/registrar/RecentApps.cpp
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src/servers/registrar/RecentApps.cpp
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//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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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 MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: RecentApps.cpp
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// Author: Tyler Dauwalder (tyler@dauwalder.net)
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// Description: Recently launched apps list
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//------------------------------------------------------------------------------
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/*! \file RecentApps.cpp
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\brief RecentApps class implementation
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*/
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#include "RecentApps.h"
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#include <AppFileInfo.h>
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#include <Entry.h>
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#include <File.h>
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#include <Message.h>
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#include <Mime.h>
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#include <Roster.h>
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#include <storage_support.h>
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#include <stdio.h>
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#define DBG(x) (x)
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//#define DBG(x)
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#define OUT printf
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/*! \class RecentApps
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\brief Manages the roster's list of recently launched applications
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*/
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/*! \var std::list<std::string> RecentApps::fAppList
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\brief The list of app sigs, most recent first
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The signatures are expected to be stored all lowercase, as MIME
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signatures are case-independent.
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*/
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// constructor
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/*! \brief Creates a new list.
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The list is initially empty.
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*/
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RecentApps::RecentApps()
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{
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}
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// destructor
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/*! \brief Frees all resources associated with the object.
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Currently does nothing.
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*/
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RecentApps::~RecentApps()
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{
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}
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// Add
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/*! \brief Places the app with the given signature at the front of
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the recent apps list.
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If the app already exists elsewhere in the list, that item is
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removed so only one instance exists in the list at any time.
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\param appSig The application's signature
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\param appFlags The application's flags. If \a appFlags contains
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either \c B_ARGV_ONLY or \c B_BACKGROUND_APP, the
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application is \b not added to the list (but \c B_OK
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is still returned).
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\return
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- \c B_OK: success (even if the app was not added due to appFlags)
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- error code: failure
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*/
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status_t
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RecentApps::Add(const char *appSig, int32 appFlags)
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{
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status_t err = appSig ? B_OK : B_BAD_VALUE;
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if (!err && !(appFlags & B_ARGV_ONLY) && !(appFlags & B_BACKGROUND_APP)) {
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// Store all sigs as lowercase
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std::string sig = BPrivate::Storage::to_lower(appSig);
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// Remove any previous instance
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std::list<std::string>::iterator i;
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for (i = fAppList.begin(); i != fAppList.end(); i++) {
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if (*i == sig) {
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fAppList.erase(i);
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break;
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}
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}
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// Add to the front
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fAppList.push_front(sig);
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}
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return err;
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}
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// Add
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/*! \brief Adds the signature of the application referred to by \a ref at
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the front of the recent apps list.
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The entry is checked for a BEOS:APP_SIG attribute. If that fails, the
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app's resources are checked. If no signature can be found, the call
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fails.
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*/
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status_t
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RecentApps::Add(const entry_ref *ref, int32 appFlags)
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{
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BFile file;
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BAppFileInfo info;
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char signature[B_MIME_TYPE_LENGTH];
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status_t err = ref ? B_OK : B_BAD_VALUE;
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if (!err)
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err = file.SetTo(ref, B_READ_ONLY);
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if (!err)
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err = info.SetTo(&file);
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if (!err)
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err = info.GetSignature(signature);
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if (!err)
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err = Add(signature, appFlags);
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return err;
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}
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// Get
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/*! \brief Returns the first \a maxCount recent apps in the \c BMessage
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pointed to by \a list.
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The message is cleared first, and \c entry_refs for the the apps are
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stored in the \c "refs" field of the message (\c B_REF_TYPE).
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If there are fewer than \a maxCount items in the list, the entire
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list is returned.
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Since BRoster::GetRecentApps() returns \c void, the message pointed
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to by \a list is simply cleared if maxCount is invalid (i.e. <= 0).
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*/
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status_t
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RecentApps::Get(int32 maxCount, BMessage *list)
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{
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status_t err = list ? B_OK : B_BAD_VALUE;
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if (!err) {
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// Clear
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list->MakeEmpty();
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// Fill
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std::list<std::string>::iterator item;
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int counter = 0;
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for (item = fAppList.begin();
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counter < maxCount && item != fAppList.end();
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counter++, item++)
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{
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entry_ref ref;
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status_t error = GetRefForApp(item->c_str(), &ref);
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if (!error)
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list->AddRef("refs", &ref);
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else
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DBG(OUT("WARNING: RecentApps::Get(): No ref found for app '%s'\n", item->c_str()));
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}
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}
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return err;
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}
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// Clear
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/*! \brief Clears the list of recently launched apps
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*/
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status_t
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RecentApps::Clear()
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{
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fAppList.clear();
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return B_OK;
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}
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// GetRefForApp
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/*! \brief Fetches an \c entry_ref for the application with the
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given signature.
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First the MIME database is checked for a matching application type
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with a valid app hint attribute. If that fails, a query is established
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to track down such an application, if there is one available.
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*/
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status_t
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RecentApps::GetRefForApp(const char *appSig, entry_ref *result)
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{
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status_t err = appSig && result ? B_OK : B_BAD_VALUE;
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// We'll use BMimeType to check for the app hint, since I'm lazy
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// and Ingo's on vacation :-P :-)
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BMimeType mime(appSig);
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err = mime.InitCheck();
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if (!err)
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err = mime.GetAppHint(result);
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return err;
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}
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// Print
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/*! \brief Dumps the the current list of apps to stdout.
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*/
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status_t
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RecentApps::Print()
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{
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std::list<std::string>::iterator item;
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int counter = 1;
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for (item = fAppList.begin();
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item != fAppList.end();
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item++)
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{
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printf("%d: '%s'\n", counter++, item->c_str());
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}
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}
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56
src/servers/registrar/RecentApps.h
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56
src/servers/registrar/RecentApps.h
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@ -0,0 +1,56 @@
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//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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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 MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: RecentApps.h
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// Author: Tyler Dauwalder (tyler@dauwalder.net)
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// Description: Recently launched apps list
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//------------------------------------------------------------------------------
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/*! \file RecentApps.h
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\brief RecentApps class declarations
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*/
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#ifndef RECENT_APPS_H
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#define RECENT_APPS_H
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#include <SupportDefs.h>
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#include <list>
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#include <string>
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struct entry_ref;
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class RecentApps {
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public:
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RecentApps();
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~RecentApps();
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status_t Add(const char *appSig, int32 appFlags);
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status_t Add(const entry_ref *ref, int32 appFlags);
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status_t Get(int32 maxCount, BMessage *list);
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status_t Clear();
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status_t Print();
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private:
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static status_t GetRefForApp(const char *appSig, entry_ref *result);
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std::list<std::string> fAppList;
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};
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#endif // RECENT_APPS_H
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