## Summary Ref comment: https://github.com/crosspoint-reader/crosspoint-reader/pull/1010#pullrequestreview-3828854640 This PR introduces `ActivityManager`, which mirrors the same concept of Activity in Android, where an activity represents a single screen of the UI. The manager is responsible for launching activities, and ensuring that only one activity is active at a time. Main differences from Android's ActivityManager: - No concept of Bundle or Intent extras - No onPause/onResume, since we don't have a concept of background activities - onActivityResult is implemented via a callback instead of a separate method, for simplicity ## Key changes - Single `renderTask` shared across all activities - No more sub-activity, we manage them using a stack; Results can be passed via `startActivityForResult` and `setResult` - Activity can call `finish()` to destroy themself, but the actual deletion will be handled by `ActivityManager` to avoid `delete this` pattern As a bonus: the manager will automatically call `requestUpdate()` when returning from another activity ## Example usage **BEFORE**: ```cpp // caller enterNewActivity(new WifiSelectionActivity(renderer, mappedInput, [this](const bool connected) { onWifiSelectionComplete(connected); })); // subactivity onComplete(true); // will eventually call exitActivity(), which deletes the caller instance (dangerous behavior) ``` **AFTER**: (mirrors the `startActivityForResult` and `setResult` from android) ```cpp // caller startActivityForResult(new NetworkModeSelectionActivity(renderer, mappedInput), [this](const ActivityResult& result) { onNetworkModeSelected(result.selectedNetworkMode); }); // subactivity ActivityResult result; result.isCancelled = false; result.selectedNetworkMode = mode; setResult(result); finish(); // signals to ActivityManager to go back to last activity AFTER this function returns ``` TODO: - [x] Reconsider if the `Intent` is really necessary or it should be removed (note: it's inspired by [Intent](https://developer.android.com/guide/components/intents-common) from Android API) ==> I decided to keep this pattern fr clarity - [x] Verify if behavior is still correct (i.e. back from sub-activity) - [x] Refactor the `ActivityWithSubactivity` to just simple `Activity` --> We are using a stack for keeping track of sub-activity now - [x] Use single task for rendering --> avoid allocating 8KB stack per activity - [x] Implement the idea of [Activity result](https://developer.android.com/training/basics/intents/result) --> Allow sub-activity like Wifi to report back the status (connected, failed, etc) --- ### AI Usage While CrossPoint doesn't have restrictions on AI tools in contributing, please be transparent about their usage as it helps set the right context for reviewers. Did you use AI tools to help write this code? **PARTIALLY**, some repetitive migrations are done by Claude, but I'm the one how ultimately approve it --------- Co-authored-by: Zach Nelson <zach@zdnelson.com>
98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
#include "NetworkModeSelectionActivity.h"
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#include <GfxRenderer.h>
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#include <I18n.h>
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#include "MappedInputManager.h"
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#include "components/UITheme.h"
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#include "fontIds.h"
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namespace {
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constexpr int MENU_ITEM_COUNT = 3;
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} // namespace
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void NetworkModeSelectionActivity::onEnter() {
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Activity::onEnter();
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// Reset selection
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selectedIndex = 0;
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// Trigger first update
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requestUpdate();
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}
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void NetworkModeSelectionActivity::onExit() { Activity::onExit(); }
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void NetworkModeSelectionActivity::loop() {
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// Handle back button - cancel
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if (mappedInput.wasPressed(MappedInputManager::Button::Back)) {
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onCancel();
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return;
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}
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// Handle confirm button - select current option
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if (mappedInput.wasPressed(MappedInputManager::Button::Confirm)) {
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NetworkMode mode = NetworkMode::JOIN_NETWORK;
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if (selectedIndex == 1) {
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mode = NetworkMode::CONNECT_CALIBRE;
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} else if (selectedIndex == 2) {
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mode = NetworkMode::CREATE_HOTSPOT;
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}
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onModeSelected(mode);
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return;
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}
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// Handle navigation
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buttonNavigator.onNext([this] {
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selectedIndex = ButtonNavigator::nextIndex(selectedIndex, MENU_ITEM_COUNT);
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requestUpdate();
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});
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buttonNavigator.onPrevious([this] {
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selectedIndex = ButtonNavigator::previousIndex(selectedIndex, MENU_ITEM_COUNT);
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requestUpdate();
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});
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}
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void NetworkModeSelectionActivity::render(RenderLock&&) {
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renderer.clearScreen();
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const auto& metrics = UITheme::getInstance().getMetrics();
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const auto pageWidth = renderer.getScreenWidth();
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const auto pageHeight = renderer.getScreenHeight();
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GUI.drawHeader(renderer, Rect{0, metrics.topPadding, pageWidth, metrics.headerHeight}, tr(STR_FILE_TRANSFER));
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const int contentTop = metrics.topPadding + metrics.headerHeight + metrics.verticalSpacing;
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const int contentHeight = pageHeight - contentTop - metrics.buttonHintsHeight - metrics.verticalSpacing * 2;
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// Menu items and descriptions
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static constexpr StrId menuItems[MENU_ITEM_COUNT] = {StrId::STR_JOIN_NETWORK, StrId::STR_CALIBRE_WIRELESS,
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StrId::STR_CREATE_HOTSPOT};
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static constexpr StrId menuDescs[MENU_ITEM_COUNT] = {StrId::STR_JOIN_DESC, StrId::STR_CALIBRE_DESC,
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StrId::STR_HOTSPOT_DESC};
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static constexpr UIIcon menuIcons[MENU_ITEM_COUNT] = {UIIcon::Wifi, UIIcon::Library, UIIcon::Hotspot};
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GUI.drawList(
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renderer, Rect{0, contentTop, pageWidth, contentHeight}, static_cast<int>(MENU_ITEM_COUNT), selectedIndex,
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[](int index) { return std::string(I18N.get(menuItems[index])); },
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[](int index) { return std::string(I18N.get(menuDescs[index])); }, [](int index) { return menuIcons[index]; });
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// Draw help text at bottom
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const auto labels = mappedInput.mapLabels(tr(STR_BACK), tr(STR_SELECT), tr(STR_DIR_UP), tr(STR_DIR_DOWN));
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GUI.drawButtonHints(renderer, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
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renderer.displayBuffer();
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}
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void NetworkModeSelectionActivity::onModeSelected(NetworkMode mode) {
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setResult(NetworkModeResult{mode});
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finish();
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}
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void NetworkModeSelectionActivity::onCancel() {
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ActivityResult result;
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result.isCancelled = true;
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setResult(std::move(result));
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finish();
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}
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