unit utslvclcef;
//20250410
{**
    @explan(说明)封装cef到vcl控件,提供cef窗口的宿主控件 %%
**}
interface
uses utslvclcefinterface,tslvcl;
type tcefowner = class(tcustomcontrol)
{**
    @explan(说明)窗口的宿主控件
**}
    protected
    static fargs;    //命令行参数
    static fcefapp;   //app 
    static fappsetting; //app设置
    static finitcef; //初始化标记
    static finitcefobj;//初始化标记
    static fcefloop; //消息循环
    static fcefwindows;
    class function initcef(); //初始化cef 
    begin
        if not finitcef then 
        begin
            fcefwindows := array();
            finitcef := true;
            sinit();
            fcefloop := new  tcefproc();
            fcefapp.on_before_command_line_processing := function(o,u,cmd)
            begin
                //cmd.set_program(%% D:\Program Files\Tinysoft\AnalyseNG.NET\tsl_cef_main.exe%%);
                //cmd.Append_Switch("single-process");
            end
            app := initializeapplication();
            app.addExitMessageLoopdo(thisfunction(cef_shutdown)); 
            cef_initialize(fargs._getptr_(), fappsetting._getptr_(), fcefapp._getptr_(),0);   
        end 
    end 
    class function sinit();override; //初始化
    begin        
        if not finitcefobj then 
        begin 
            inherited;
            finitcefobj := true;
            fargs := new cef_main_args_t();
            fcefapp := new cef_app_t();     
            fappsetting := new cef_settings_t();
            tp := unit(utslvclauxiliary).gettemppath();
            fappsetting.log_file :=  tp+"-cefownerlogfile-"+datetostr(date())+".log";
            fappsetting.browser_subprocess_path := tslpath()+"tsl_cef_main";
            fappsetting.cache_path := tp+"-cefownercatche-";
            fappsetting.log_severity :=99;//0;
        end 
    end 
    public
    function create(AOwner);
    begin
        inherited;
        width := 300;
        height := 300;
        fwinfo := new cef_window_info_t();
        fclient := new cef_client_t();  
        fbrssetting := new cef_browser_settings_t();  
        ftimer := new TTimer(self);             
    end  
    function checknewchild(c);override;
    begin
        return false;
    end   
    function WMSize(o,e);override;
    begin
        if not HandleAllocated() then return ;//        
        ch := _wapi.GetWindow(o.handle,GW_CHILD);     
        if ch then 
        begin 
            rc := ClientRect;
            _wapi.SetWindowPos(ch,0,rc[0],rc[1],rc[2],rc[3],0);            
        end 
    end     
    function InitializeWnd();override;
    begin
        inherited;
        if HandleAllocated() then 
        begin 
            if not ifarray(fcefwindows) then 
            begin
                fcefwindows := array();
            end 
            fhandlebk := inttostr(handle);
            fcefwindows[fhandlebk] := self(true);
            initbrowser();        
        end         
    end 
    function DestroyHandle();override;
    begin
        inherited;  
        reindex(fcefwindows,array(fhandlebk:nil));
        fbrower := nil;  
    end 
    function Recycling();override;
    begin
        inherited;
    end     
    function reload(ic); //重新加载,ic 是否忽略缓存
    begin
        if fbrower then 
        begin
            if ic then fbrower.reload_ignore_cache();
            else fbrower.reload();
        end 
    end 
    function showdevtools(); //打开调试窗口
    begin
        if fbrower  then 
        begin
            host := fbrower.get_host();
            if host then 
            begin
                host.show_dev_tools();  
            end 
        end       
    end 
    function closedevtools(); //关闭调试窗口
    begin
        if fbrower then 
        begin
            host := fbrower.get_host();
            if host then 
            begin
                host.close_dev_tools();   
            end  
        end     
    end 
    published
    property client read fclient;
    property appsetting read getappsetting;
    property url:string read furl write seturl;
    {**
        @param(url)(string)网址 %%
    **}
    private 
    function seturl(u); //设置url 
    begin
        if furl<>u then 
        begin
            furl := u;  
            if HandleAllocated() then 
            begin 
                if fbrower {and (fm := fbrower.get_main_frame())} then 
                begin
                    add_lazy_load(); 
                end  else 
                begin
                    initbrowser();    
                end 
            end              
        end     
    end 
    function initbrowser(); //初始加载url
    begin
        if csDesigning in ComponentState then return ;
        if furl and ifstring(furl) then 
        begin 
            initcef();
            r := ClientRect;
            fwinfo.parent_window := handle;
            fwinfo.window_name := Caption;
            fwinfo.bounds.x := r[0];
            fwinfo.bounds.y := r[1];
            fwinfo.bounds.width := r[2];
            fwinfo.bounds.height := r[3];            
            fbrower := cef_browser_host_create_browser_sync_tsl(fwinfo, fclient,"", fbrssetting, 0, 0);
            add_lazy_load();          
        end 
    end 
    function lazy_load();
    begin
        if not fneedload then return ;
        if fbrower then 
        begin 
            fm := fbrower.get_main_frame();
            if fm then 
                fm.load_url(furl);  
            fneedload := false;
        end  
    end 
    function add_lazy_load();
    begin
        fneedload := true;
        ftimer.timeout(thisfunction(lazy_load()),60); 
    end 
    private     
    [weakref]fbrower;
    [weakref]fclient;
    furl;
    fwinfo;
    fbrssetting;   
    fhandlebk; 
    ftimer; 
    fneedload;    
    class function tslpath(); //tsl.exe 目录
    begin
        p := pluginpath();
        iof := iofileseparator();
        for i:= length(p)-1 downto 1 do 
        begin
            if p[i]=iof then return p[1:i];
        end 
        return p;
    end 
    function getappsetting();
    begin
        return fappsetting;
    end 
end 
implementation
initialization

end.