fix: Delay archive loading in Wayland to fix dialog positioning

[LiHua000]

Delay first archive loading by 200ms in Wayland to allow window positioning to complete before showing password dialogs. Prevents dialogs from appearing at (0,0) when opening encrypted archives.

Log: fix bug

Bug: https://pms.uniontech.com/bug-view-355681.html

Summary by Sourcery

Bug Fixes:

• Ensure password dialogs for encrypted archives open at the correct window position on Wayland by deferring the first archive load.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Delays the initial archive loading on Wayland by 200ms using a one‑time guard and QTimer to ensure password dialogs appear in the correct position instead of at (0,0).

Sequence diagram for delayed archive loading on Wayland

sequenceDiagram
    actor User
    participant MainWindow
    participant UiTools
    participant QTimer
    participant PasswordDialog

    alt Wayland_and_first_load
        User->>MainWindow: handleArguments_Open(listParam)
        MainWindow->>UiTools: isWayland()
        UiTools-->>MainWindow: true
        MainWindow->>QTimer: singleShot(200, callback)
        QTimer-->>MainWindow: timeout
        MainWindow->>MainWindow: loadArchive(listParam_0)
        MainWindow->>PasswordDialog: showPasswordDialog()
        PasswordDialog-->>User: Display_at_correct_position
    else Not_Wayland_or_not_first_load
        User->>MainWindow: handleArguments_Open(listParam)
        MainWindow->>UiTools: isWayland()
        UiTools-->>MainWindow: false_or_firstLoad_false
        MainWindow->>MainWindow: loadArchive(listParam_0)
        MainWindow->>PasswordDialog: showPasswordDialog()
        PasswordDialog-->>User: Display_immediately
    end

Loading

File-Level Changes

Change	Details	Files
Gate the first archive load on Wayland behind a one-time 200ms delayed QTimer callback to allow window positioning to settle before showing dialogs.	Introduce a static boolean flag to detect the first archive load invocation. Check the Wayland environment and the first-load flag before loading the archive. Use QTimer::singleShot with a 200ms delay to call loadArchive asynchronously on first load under Wayland. Fallback to immediate loadArchive execution for non-Wayland platforms or subsequent loads.	src/source/mainwindow.cpp

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[sourcery-ai]

Hey - I've found 1 issue, and left some high level feedback:

• The lambda passed to QTimer::singleShot captures listParam by reference, which can dangle after handleArguments_Open returns; capture the required value by copy instead (e.g., [this, file = listParam[0]]).
• Using a function-static firstLoad flag may be surprising and is not thread-safe; consider making this a member variable or a more explicit startup-state mechanism tied to the window instance.
• The 200ms delay is a magic number; consider defining a named constant or deriving the timing from an appropriate signal/event to make the intent clearer and behavior more robust across environments.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- The lambda passed to QTimer::singleShot captures listParam by reference, which can dangle after handleArguments_Open returns; capture the required value by copy instead (e.g., [this, file = listParam[0]]).
- Using a function-static firstLoad flag may be surprising and is not thread-safe; consider making this a member variable or a more explicit startup-state mechanism tied to the window instance.
- The 200ms delay is a magic number; consider defining a named constant or deriving the timing from an appropriate signal/event to make the intent clearer and behavior more robust across environments.

## Individual Comments

### Comment 1
<location path="src/source/mainwindow.cpp" line_range="2598-2595" />
<code_context>
+    static bool firstLoad = true;
+    if (UiTools::isWayland() && firstLoad) {
+        firstLoad = false;
+        QTimer::singleShot(200, [this, &listParam]() {
+            loadArchive(listParam[0]);
+        });
+    } else {
</code_context>
<issue_to_address>
**issue (bug_risk):** Capturing `listParam` by reference in the delayed lambda risks a dangling reference.

Because the lambda runs 200 ms after `handleArguments_Open` returns, the const reference parameter `listParam` is already out of scope when accessed, leading to undefined behavior. Capture it safely instead, e.g. by value (`[this, listParam]`) or, more efficiently, capture just `listParam[0]` (`[this, path = listParam[0]]`) and use `path` inside the lambda.
</issue_to_address>

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: LiHua000, max-lvs

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• debian/deepin/OWNERS

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[LiHua000]

/merge