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Code Issues Projects Releases Wiki Activity

Gui: Strip `about:` from links [#799]

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staging v4.6.11.2009
gnosygnu 4 years ago
parent de841f8ff2
commit caad4145d5
1 changed files with 345 additions and 299 deletions
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644
150_gfui/src/gplx/gfui/kits/swts/Swt_html.java
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@ -1,6 +1,6 @@
/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012-2017 gnosygnu@gmail.com
Copyright (C) 2012-2020 gnosygnu@gmail.com
XOWA is licensed under the terms of the General Public License (GPL) Version 3,
or alternatively under the terms of the Apache License Version 2.0.
@ -13,301 +13,347 @@ The terms of each license can be found in the source code repository:
GPLv3 License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-GPLv3.txt
Apache License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-APACHE2.txt
*/
package gplx.gfui.kits.swts; import gplx.*; import gplx.gfui.*; import gplx.gfui.kits.*;
import gplx.core.envs.System_;
import gplx.core.primitives.*;
import gplx.core.threads.Thread_adp_;
import gplx.gfui.controls.elems.GfuiElem;
import gplx.gfui.controls.gxws.GxwCbkHost;
import gplx.gfui.controls.gxws.GxwCore_base;
import gplx.gfui.controls.gxws.GxwElem;
import gplx.gfui.controls.gxws.Gxw_html;
import gplx.gfui.controls.gxws.Gxw_html_load_tid_;
import gplx.gfui.controls.standards.Gfui_html;
import gplx.gfui.controls.standards.Gfui_tab_mgr;
import gplx.gfui.draws.ColorAdp;
import gplx.gfui.draws.ColorAdp_;
import gplx.gfui.ipts.*;
import gplx.gfui.kits.core.Swt_kit;
import java.security.acl.Owner;
import gplx.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
import java.security.acl.Owner;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
public class Swt_html implements Gxw_html, Swt_control, FocusListener, Gfo_evt_mgr_owner {
private Swt_html_lnr_location lnr_location; private Swt_html_lnr_status lnr_status;
public Swt_html(Swt_kit kit, Swt_control owner_control, Keyval_hash ctorArgs) {
this.kit = kit;
lnr_location = new Swt_html_lnr_location(this);
lnr_status = new Swt_html_lnr_status(this);
Object browser_tid_obj = ctorArgs.Get_val_or(Swt_kit.Cfg_Html_BrowserType, null);
this.browser_tid = browser_tid_obj == null ? Browser_tid_none : Int_.Cast(browser_tid_obj);
browser = new Browser(owner_control.Under_composite(), browser_tid);
core = new Swt_core_cmds_html(this, browser);
browser.addKeyListener(new Swt_lnr_key(this));
browser.addMouseListener(new Swt_html_lnr_mouse(this, browser, kit));
browser.addLocationListener(lnr_location);
browser.addProgressListener(new Swt_html_lnr_progress(this));
browser.addStatusTextListener(lnr_status);
browser.addFocusListener(this);
browser.addTitleListener(new Swt_html_lnr_title(this));
browser.addMouseWheelListener(new Swt_html_lnr_wheel(this));
// browser.addOpenWindowListener(new Swt_open_window_listener(this)); // handle target='blank'
// browser.addTraverseListener(new Swt_html_lnr_Traverse(this));
}
public Swt_kit Kit() {return kit;} private Swt_kit kit;
public Gfo_evt_mgr Evt_mgr() {return ev_mgr;} private Gfo_evt_mgr ev_mgr; public void Evt_mgr_(Gfo_evt_mgr v) {ev_mgr = v;}
@Override public Control Under_control() {return browser;} private Browser browser;
@Override public Composite Under_composite() {return null;}
@Override public Control Under_menu_control() {return browser;}
public int Browser_tid() {return browser_tid;} private final int browser_tid;
public String Load_by_url_path() {return load_by_url_path;} private String load_by_url_path;
public void Html_doc_html_load_by_mem(String html) {
this.html_doc_html_load_tid = Gxw_html_load_tid_.Tid_mem;
this.load_by_url_path = null;
browser.setText(html); // DBG: Io_mgr.I.SaveFilStr(Io_url_.new_fil_("C:\\temp.txt"), s)
}
public void Html_doc_html_load_by_url(Io_url path, String html) {
this.html_doc_html_load_tid = Gxw_html_load_tid_.Tid_url;
this.load_by_url_path = path.To_http_file_str();
Io_mgr.Instance.SaveFilStr(path, html);
browser.setUrl(path.Xto_api());
}
public byte Html_doc_html_load_tid() {return html_doc_html_load_tid;} private byte html_doc_html_load_tid;
public void Html_doc_html_load_tid_(byte v) {html_doc_html_load_tid = v;}
public void Html_js_enabled_(boolean v) {browser.setJavascriptEnabled(v);}
public void Html_js_cbks_add(String func_name, Gfo_invk invk) {new Swt_html_func(browser, func_name, invk);}
public String Html_js_eval_script(String script) {return Eval_script_as_str(script);}
public Object Html_js_eval_script_as_obj(String script) {return Eval_script(script);}
public boolean Html_js_eval_proc_as_bool(String proc, Object... args) {return Bool_.Cast(Html_js_eval_proc_as_obj(proc, args));}
public String Html_js_eval_proc_as_str(String proc, Object... args) {return Object_.Xto_str_strict_or_null(Html_js_eval_proc_as_obj(proc, args));}
public String Html_js_send_json(String name, String data) {
String script = String_.Format("return {0}('{1}');", name, String_.Replace(data, "\n", "") );
return (String)Eval_script(script);
}
private Object Html_js_eval_proc_as_obj(String proc, Object... args) {
Bry_bfr bfr = Bry_bfr_.New();
bfr.Add_str_a7("return ").Add_str_u8(proc).Add_byte(Byte_ascii.Paren_bgn);
int args_len = args.length;
for (int i = 0; i < args_len; ++i) {
Object arg = args[i];
if (i != 0) bfr.Add_byte(Byte_ascii.Comma);
boolean quote_val = true;
if ( Type_.Eq_by_obj(arg, Bool_.Cls_ref_type)
|| Type_.Eq_by_obj(arg, Int_.Cls_ref_type)
|| Type_.Eq_by_obj(arg, Long_.Cls_ref_type)
) {
quote_val = false;
}
if (quote_val) bfr.Add_byte(Byte_ascii.Apos);
if (quote_val)
bfr.Add_str_u8(Escape_quote(Object_.Xto_str_strict_or_null_mark(arg)));
else
bfr.Add_obj_strict(arg);
if (quote_val) bfr.Add_byte(Byte_ascii.Apos);
}
bfr.Add_byte(Byte_ascii.Paren_end).Add_byte(Byte_ascii.Semic);
return Eval_script(bfr.To_str_and_clear());
}
public static String Escape_quote(String v) {
String rv = v;
rv = String_.Replace(rv, "'", "\\'");
rv = String_.Replace(rv, "\"", "\\\"");
rv = String_.Replace(rv, "\n", "\\n");
return rv;
}
public void Html_invk_src_(Gfo_evt_itm invk) {lnr_location.Host_set(invk); lnr_status.Host_set(invk);}
public void Html_dispose() {
browser.dispose();
delete_owner.SubElems().DelOrFail(delete_cur); // NOTE: must delete cur from owner, else new tab will fail after closing one; DATE:2014-07-09
System_.Garbage_collect();
}
private GfuiElem delete_owner, delete_cur;
public void Delete_elems_(GfuiElem delete_owner, GfuiElem delete_cur) {this.delete_owner = delete_owner; this.delete_cur = delete_cur;} // HACK: set owner / cur so delete can work;
@Override public GxwCore_base Core() {return core;} private GxwCore_base core;
@Override public GxwCbkHost Host() {return host;} @Override public void Host_set(GxwCbkHost host) {this.host = host;} GxwCbkHost host;
@Override public String TextVal() {return browser.getText();}
@Override public void TextVal_set(String v) {browser.setText(v);}
@Override public void EnableDoubleBuffering() {}
@Override public Object Invk(GfsCtx ctx, int ikey, String k, GfoMsg m) {return Gfo_invk_.Rv_unhandled;}
private String Eval_script_as_str(String script) {return (String)Eval_script(script);}
public Object Eval_script(String script) {
eval_rslt.Clear();
try {
eval_rslt.Result_set(browser.evaluate(script));
return eval_rslt.Result();
}
catch (Exception e) {eval_rslt.Error_set(e.getMessage()); return eval_rslt.Error();}
} private Swt_html_eval_rslt eval_rslt = new Swt_html_eval_rslt();
@Override public void focusGained(FocusEvent arg0) {}
@Override public void focusLost(FocusEvent arg0) {}
public static final int
Browser_tid_none = SWT.NONE
, Browser_tid_mozilla = SWT.MOZILLA
, Browser_tid_webkit = SWT.WEBKIT
;
}
class Swt_core_cmds_html extends Swt_core__basic {
public Swt_core_cmds_html(Swt_html html_box, Control control) {super(control);}
@Override public void Focus() {
if (Focus_able())
control.forceFocus();
}
@Override public void Select_exec() {
this.Focus();
}
}
class Swt_html_lnr_traverse implements TraverseListener {
public Swt_html_lnr_traverse(Swt_html html_box) {}
@Override public void keyTraversed(TraverseEvent arg0) {}
}
class Swt_html_lnr_title implements TitleListener {
private Swt_html html_box;
public Swt_html_lnr_title(Swt_html html_box) {this.html_box = html_box;}
@Override public void changed(TitleEvent ev) {
try {UsrDlg_.Instance.Note(ev.title);}
catch (Exception e) {html_box.Kit().Ask_ok("xowa.swt.html_box", "title.fail", Err_.Message_gplx_full(e));} // NOTE: must catch error or will cause app to lock; currently called inside displaySync
}
}
class Swt_html_func extends BrowserFunction {
private final Gfo_invk invk;
private final Browser browser;
public Swt_html_func(Browser browser, String name, Gfo_invk invk) {
super (browser, name);
this.browser = browser;
this.invk = invk;
}
public Object function (Object[] args) {
try {
return gplx.gfui.controls.standards.Gfui_html.Js_args_exec(invk, args);
}
catch (Exception e) {
String rv = Err_.Message_gplx_full(e);
browser.execute("alert('" + Swt_html.Escape_quote(rv) + "')");
return rv;
}
}
}
class Swt_html_lnr_status implements StatusTextListener {
public Swt_html_lnr_status(Swt_html html_box) {this.html_box = html_box;} private Swt_html html_box;
public void Host_set(Gfo_evt_itm host) {this.host = host;} Gfo_evt_itm host;
@Override public void changed(StatusTextEvent ev) {
if (html_box.Kit().Kit_mode__term()) return; // shutting down raises status changed events; ignore, else SWT exception thrown; DATE:2014-05-29
String ev_text = ev.text;
String load_by_url_path = html_box.Load_by_url_path();
if (load_by_url_path != null) ev_text = String_.Replace(ev_text, load_by_url_path, ""); // remove "C:/xowa/tab_1.html"
// if (String_.Has(ev_text, "Loading [MathJax]")) return; // suppress MathJax messages; // NOTE: disabled for 2.1 (which no longer outputs messages to status); DATE:2013-05-03
try {if (host != null) Gfo_evt_mgr_.Pub_obj(host, Gfui_html.Evt_link_hover, "v", ev_text);}
catch (Exception e) {html_box.Kit().Ask_ok("xowa.gui.html_box", "status.fail", Err_.Message_gplx_full(e));} // NOTE: must catch error or will cause app to lock; currently called inside displaySync
}
}
class Swt_html_lnr_progress implements ProgressListener {
public Swt_html_lnr_progress(Swt_html html_box) {}
@Override public void changed(ProgressEvent arg0) {}
@Override public void completed(ProgressEvent arg0) {
// UsrDlg_._.Note("done");
}
}
class Swt_html_lnr_location implements LocationListener {
public Swt_html_lnr_location(Swt_html html_box) {this.html_box = html_box;} private Swt_html html_box;
public void Host_set(Gfo_evt_itm host) {this.host = host;} private Gfo_evt_itm host;
@Override public void changed(LocationEvent arg) {Pub_evt(arg, Gfui_html.Evt_location_changed);}
@Override public void changing(LocationEvent arg) {Pub_evt(arg, Gfui_html.Evt_location_changing);}
private void Pub_evt(LocationEvent arg, String evt) {
String location = arg.location;
if (String_.Eq(location, "about:blank")) return; // location changing event fires once when page is loaded; ignore
if ( html_box.Browser_tid() == Swt_html.Browser_tid_webkit // webkit prefixes "about:blank" to anchors; causes TOC to fail when clicking on links; EX:about:blank#TOC1; DATE:2015-06-09
&& String_.Has_at_bgn(location, "about:blank")) {
location = String_.Mid(location, 11); // 11 = "about:blank".length
}
if ( html_box.Html_doc_html_load_tid() == Gxw_html_load_tid_.Tid_url // navigating to file://page.html will fire location event; ignore if url mode
&& String_.Has_at_bgn(location, "file:")
&& String_.Has_at_end(location, ".html")
)
return;
try {
Gfo_evt_mgr_.Pub_obj(host, evt, "v", location);
arg.doit = false; // cancel navigation event, else there will be an error when trying to go to invalid location
}
catch (Exception e) {html_box.Kit().Ask_ok("xowa.gui.html_box", evt, Err_.Message_gplx_full(e));} // NOTE: must catch error or will cause app to lock; currently called inside displaySync
}
}
class Swt_html_lnr_mouse implements MouseListener {
private GxwElem elem; private Browser browser; private Swt_kit kit;
public Swt_html_lnr_mouse(GxwElem elem, Browser browser, Swt_kit kit) {this.elem = elem; this.browser = browser; this.kit = kit;}
@Override public void mouseDown(MouseEvent ev) {
if (Is_at_scrollbar_area()) return;
elem.Host().MouseDownCbk(XtoMouseData(ev));
}
@Override public void mouseUp(MouseEvent ev) {
if (Is_at_scrollbar_area()) return;
elem.Host().MouseUpCbk(XtoMouseData(ev));
}
private boolean Is_at_scrollbar_area() {
// WORKAROUND.SWT: SEE:NOTE_1:browser scrollbar and click
Point browser_size = browser.getSize();
Point click_pos = kit.Swt_display().getCursorLocation();
return click_pos.x >= browser_size.x - 12;
}
@Override public void mouseDoubleClick(MouseEvent ev) {}
IptEvtDataMouse XtoMouseData(MouseEvent ev) {
IptMouseBtn btn = null;
switch (ev.button) {
case 1: btn = IptMouseBtn_.Left; break;
case 2: btn = IptMouseBtn_.Middle; break;
case 3: btn = IptMouseBtn_.Right; break;
case 4: btn = IptMouseBtn_.X1; break;
case 5: btn = IptMouseBtn_.X2; break;
}
return IptEvtDataMouse.new_(btn, IptMouseWheel_.None, ev.x, ev.y);
}
}
class Swt_html_lnr_wheel implements MouseWheelListener {
private final Swt_html html_box;
public Swt_html_lnr_wheel(Swt_html html_box) {
this.html_box = html_box;
}
@Override public void mouseScrolled(MouseEvent evt) {
if (evt.stateMask == SWT.CTRL) { // ctrl held;
Gfo_evt_mgr_.Pub_obj(html_box, Gfui_html.Evt_zoom_changed, "clicks_is_positive", evt.count > 0);
}
}
}
//class Swt_open_window_listener implements OpenWindowListener {
// private final Swt_html html_box;
// public Swt_open_window_listener(Swt_html html_box) {this.html_box = html_box;}
// @Override public void open(WindowEvent arg0) {
// Tfds.Write();
// }
//}
/*
NOTE_1:browser scrollbar and click
a click in the scrollbar area will raise a mouse-down/mouse-up event in content-editable mode
. a click should be consumed by the scrollbar and not have any effect elsewhere on the window
. instead, a click event is raised, and counted twice
1) for the scroll bar this will scroll the area.
2) for the window. if keyboard-focus is set on a link, then it will activate the link.
swt does not expose any scrollbar information (visible, width), b/c the scrollbar is controlled by the underlying browser
so, assume:
. scrollbar is always present
. scrollbar has arbitrary width (currently 12)
. and discard if click is in this scrollbar area
two issues still occur with the workaround
1) even if the scrollbar is not present, any click on the right-hand edge of the screen will be ignored
2) click -> hold -> move mouse over to left -> release; the mouse up should be absorbed, but it is not due to position of release
*/
package gplx.gfui.kits.swts;
import gplx.Bool_;
import gplx.Bry_bfr;
import gplx.Bry_bfr_;
import gplx.Byte_ascii;
import gplx.Err_;
import gplx.GfoMsg;
import gplx.Gfo_evt_itm;
import gplx.Gfo_evt_mgr;
import gplx.Gfo_evt_mgr_;
import gplx.Gfo_evt_mgr_owner;
import gplx.Gfo_invk;
import gplx.Gfo_invk_;
import gplx.GfsCtx;
import gplx.Int_;
import gplx.Io_mgr;
import gplx.Io_url;
import gplx.Keyval_hash;
import gplx.Long_;
import gplx.Object_;
import gplx.String_;
import gplx.Type_;
import gplx.UsrDlg_;
import gplx.core.envs.System_;
import gplx.gfui.controls.elems.GfuiElem;
import gplx.gfui.controls.gxws.GxwCbkHost;
import gplx.gfui.controls.gxws.GxwCore_base;
import gplx.gfui.controls.gxws.GxwElem;
import gplx.gfui.controls.gxws.Gxw_html;
import gplx.gfui.controls.gxws.Gxw_html_load_tid_;
import gplx.gfui.controls.standards.Gfui_html;
import gplx.gfui.ipts.IptEvtDataMouse;
import gplx.gfui.ipts.IptMouseBtn;
import gplx.gfui.ipts.IptMouseBtn_;
import gplx.gfui.ipts.IptMouseWheel_;
import gplx.gfui.kits.core.Swt_kit;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.browser.BrowserFunction;
import org.eclipse.swt.browser.LocationEvent;
import org.eclipse.swt.browser.LocationListener;
import org.eclipse.swt.browser.ProgressEvent;
import org.eclipse.swt.browser.ProgressListener;
import org.eclipse.swt.browser.StatusTextEvent;
import org.eclipse.swt.browser.StatusTextListener;
import org.eclipse.swt.browser.TitleEvent;
import org.eclipse.swt.browser.TitleListener;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.events.MouseWheelListener;
import org.eclipse.swt.events.TraverseEvent;
import org.eclipse.swt.events.TraverseListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
public class Swt_html implements Gxw_html, Swt_control, FocusListener, Gfo_evt_mgr_owner {
private Swt_html_lnr_location lnr_location; private Swt_html_lnr_status lnr_status;
public Swt_html(Swt_kit kit, Swt_control owner_control, Keyval_hash ctorArgs) {
this.kit = kit;
lnr_location = new Swt_html_lnr_location(this);
lnr_status = new Swt_html_lnr_status(this);
Object browser_tid_obj = ctorArgs.Get_val_or(Swt_kit.Cfg_Html_BrowserType, null);
this.browser_tid = browser_tid_obj == null ? Browser_tid_none : Int_.Cast(browser_tid_obj);
browser = new Browser(owner_control.Under_composite(), browser_tid);
core = new Swt_core_cmds_html(this, browser);
browser.addKeyListener(new Swt_lnr_key(this));
browser.addMouseListener(new Swt_html_lnr_mouse(this, browser, kit));
browser.addLocationListener(lnr_location);
browser.addProgressListener(new Swt_html_lnr_progress(this));
browser.addStatusTextListener(lnr_status);
browser.addFocusListener(this);
browser.addTitleListener(new Swt_html_lnr_title(this));
browser.addMouseWheelListener(new Swt_html_lnr_wheel(this));
// browser.addOpenWindowListener(new Swt_open_window_listener(this)); // handle target='blank'
// browser.addTraverseListener(new Swt_html_lnr_Traverse(this));
}
public Swt_kit Kit() {return kit;} private Swt_kit kit;
public Gfo_evt_mgr Evt_mgr() {return ev_mgr;} private Gfo_evt_mgr ev_mgr; public void Evt_mgr_(Gfo_evt_mgr v) {ev_mgr = v;}
@Override public Control Under_control() {return browser;} private Browser browser;
@Override public Composite Under_composite() {return null;}
@Override public Control Under_menu_control() {return browser;}
public int Browser_tid() {return browser_tid;} private final int browser_tid;
public String Load_by_url_path() {return load_by_url_path;} private String load_by_url_path;
public void Html_doc_html_load_by_mem(String html) {
this.html_doc_html_load_tid = Gxw_html_load_tid_.Tid_mem;
this.load_by_url_path = null;
browser.setText(html); // DBG: Io_mgr.I.SaveFilStr(Io_url_.new_fil_("C:\\temp.txt"), s)
}
public void Html_doc_html_load_by_url(Io_url path, String html) {
this.html_doc_html_load_tid = Gxw_html_load_tid_.Tid_url;
this.load_by_url_path = path.To_http_file_str();
Io_mgr.Instance.SaveFilStr(path, html);
browser.setUrl(path.Xto_api());
}
public byte Html_doc_html_load_tid() {return html_doc_html_load_tid;} private byte html_doc_html_load_tid;
public void Html_doc_html_load_tid_(byte v) {html_doc_html_load_tid = v;}
public void Html_js_enabled_(boolean v) {browser.setJavascriptEnabled(v);}
public void Html_js_cbks_add(String func_name, Gfo_invk invk) {new Swt_html_func(browser, func_name, invk);}
public String Html_js_eval_script(String script) {return Eval_script_as_str(script);}
public Object Html_js_eval_script_as_obj(String script) {return Eval_script(script);}
public boolean Html_js_eval_proc_as_bool(String proc, Object... args) {return Bool_.Cast(Html_js_eval_proc_as_obj(proc, args));}
public String Html_js_eval_proc_as_str(String proc, Object... args) {return Object_.Xto_str_strict_or_null(Html_js_eval_proc_as_obj(proc, args));}
public String Html_js_send_json(String name, String data) {
String script = String_.Format("return {0}('{1}');", name, String_.Replace(data, "\n", "") );
return (String)Eval_script(script);
}
private Object Html_js_eval_proc_as_obj(String proc, Object... args) {
Bry_bfr bfr = Bry_bfr_.New();
bfr.Add_str_a7("return ").Add_str_u8(proc).Add_byte(Byte_ascii.Paren_bgn);
int args_len = args.length;
for (int i = 0; i < args_len; ++i) {
Object arg = args[i];
if (i != 0) bfr.Add_byte(Byte_ascii.Comma);
boolean quote_val = true;
if ( Type_.Eq_by_obj(arg, Bool_.Cls_ref_type)
|| Type_.Eq_by_obj(arg, Int_.Cls_ref_type)
|| Type_.Eq_by_obj(arg, Long_.Cls_ref_type)
) {
quote_val = false;
}
if (quote_val) bfr.Add_byte(Byte_ascii.Apos);
if (quote_val)
bfr.Add_str_u8(Escape_quote(Object_.Xto_str_strict_or_null_mark(arg)));
else
bfr.Add_obj_strict(arg);
if (quote_val) bfr.Add_byte(Byte_ascii.Apos);
}
bfr.Add_byte(Byte_ascii.Paren_end).Add_byte(Byte_ascii.Semic);
return Eval_script(bfr.To_str_and_clear());
}
public static String Escape_quote(String v) {
String rv = v;
rv = String_.Replace(rv, "'", "\\'");
rv = String_.Replace(rv, "\"", "\\\"");
rv = String_.Replace(rv, "\n", "\\n");
return rv;
}
public void Html_invk_src_(Gfo_evt_itm invk) {lnr_location.Host_set(invk); lnr_status.Host_set(invk);}
public void Html_dispose() {
browser.dispose();
delete_owner.SubElems().DelOrFail(delete_cur); // NOTE: must delete cur from owner, else new tab will fail after closing one; DATE:2014-07-09
System_.Garbage_collect();
}
private GfuiElem delete_owner, delete_cur;
public void Delete_elems_(GfuiElem delete_owner, GfuiElem delete_cur) {this.delete_owner = delete_owner; this.delete_cur = delete_cur;} // HACK: set owner / cur so delete can work;
@Override public GxwCore_base Core() {return core;} private GxwCore_base core;
@Override public GxwCbkHost Host() {return host;} @Override public void Host_set(GxwCbkHost host) {this.host = host;} GxwCbkHost host;
@Override public String TextVal() {return browser.getText();}
@Override public void TextVal_set(String v) {browser.setText(v);}
@Override public void EnableDoubleBuffering() {}
@Override public Object Invk(GfsCtx ctx, int ikey, String k, GfoMsg m) {return Gfo_invk_.Rv_unhandled;}
private String Eval_script_as_str(String script) {return (String)Eval_script(script);}
public Object Eval_script(String script) {
eval_rslt.Clear();
try {
eval_rslt.Result_set(browser.evaluate(script));
return eval_rslt.Result();
}
catch (Exception e) {eval_rslt.Error_set(e.getMessage()); return eval_rslt.Error();}
} private Swt_html_eval_rslt eval_rslt = new Swt_html_eval_rslt();
@Override public void focusGained(FocusEvent arg0) {}
@Override public void focusLost(FocusEvent arg0) {}
public static final int
Browser_tid_none = SWT.NONE
, Browser_tid_mozilla = SWT.MOZILLA
, Browser_tid_webkit = SWT.WEBKIT
;
private static final String URL_ABOUT_PREFIX = "about:";
public static String StripAboutFromUrl(String url) {
return String_.Has_at_bgn(url, URL_ABOUT_PREFIX)
? String_.Mid(url, URL_ABOUT_PREFIX.length())
: url;
}
}
class Swt_core_cmds_html extends Swt_core__basic {
public Swt_core_cmds_html(Swt_html html_box, Control control) {super(control);}
@Override public void Focus() {
if (Focus_able())
control.forceFocus();
}
@Override public void Select_exec() {
this.Focus();
}
}
class Swt_html_lnr_traverse implements TraverseListener {
public Swt_html_lnr_traverse(Swt_html html_box) {}
@Override public void keyTraversed(TraverseEvent arg0) {}
}
class Swt_html_lnr_title implements TitleListener {
private Swt_html html_box;
public Swt_html_lnr_title(Swt_html html_box) {this.html_box = html_box;}
@Override public void changed(TitleEvent ev) {
try {UsrDlg_.Instance.Note(ev.title);}
catch (Exception e) {html_box.Kit().Ask_ok("xowa.swt.html_box", "title.fail", Err_.Message_gplx_full(e));} // NOTE: must catch error or will cause app to lock; currently called inside displaySync
}
}
class Swt_html_func extends BrowserFunction {
private final Gfo_invk invk;
private final Browser browser;
public Swt_html_func(Browser browser, String name, Gfo_invk invk) {
super (browser, name);
this.browser = browser;
this.invk = invk;
}
public Object function (Object[] args) {
try {
return gplx.gfui.controls.standards.Gfui_html.Js_args_exec(invk, args);
}
catch (Exception e) {
String rv = Err_.Message_gplx_full(e);
browser.execute("alert('" + Swt_html.Escape_quote(rv) + "')");
return rv;
}
}
}
class Swt_html_lnr_status implements StatusTextListener {
public Swt_html_lnr_status(Swt_html html_box) {this.html_box = html_box;} private Swt_html html_box;
public void Host_set(Gfo_evt_itm host) {this.host = host;} Gfo_evt_itm host;
@Override public void changed(StatusTextEvent ev) {
if (html_box.Kit().Kit_mode__term()) return; // shutting down raises status changed events; ignore, else SWT exception thrown; DATE:2014-05-29
String ev_text = ev.text;
ev_text = Swt_html.StripAboutFromUrl(ev_text); // 2020-09-19|ISSUE#:799|strip "about:/" from url due to SWT 4.16
String load_by_url_path = html_box.Load_by_url_path();
if (load_by_url_path != null) ev_text = String_.Replace(ev_text, load_by_url_path, ""); // remove "C:/xowa/tab_1.html"
// if (String_.Has(ev_text, "Loading [MathJax]")) return; // suppress MathJax messages; // NOTE: disabled for 2.1 (which no longer outputs messages to status); DATE:2013-05-03
try {if (host != null) Gfo_evt_mgr_.Pub_obj(host, Gfui_html.Evt_link_hover, "v", ev_text);}
catch (Exception e) {html_box.Kit().Ask_ok("xowa.gui.html_box", "status.fail", Err_.Message_gplx_full(e));} // NOTE: must catch error or will cause app to lock; currently called inside displaySync
}
}
class Swt_html_lnr_progress implements ProgressListener {
public Swt_html_lnr_progress(Swt_html html_box) {}
@Override public void changed(ProgressEvent arg0) {}
@Override public void completed(ProgressEvent arg0) {
// UsrDlg_._.Note("done");
}
}
class Swt_html_lnr_location implements LocationListener {
public Swt_html_lnr_location(Swt_html html_box) {this.html_box = html_box;} private Swt_html html_box;
public void Host_set(Gfo_evt_itm host) {this.host = host;} private Gfo_evt_itm host;
@Override public void changed(LocationEvent arg) {Pub_evt(arg, Gfui_html.Evt_location_changed);}
@Override public void changing(LocationEvent arg) {Pub_evt(arg, Gfui_html.Evt_location_changing);}
private void Pub_evt(LocationEvent arg, String evt) {
String location = arg.location;
// location_changing fires once when page is loaded; ignore
if (String_.Eq(location, "about:blank")) {
return;
}
// webkit prefixes "about:blank" to anchors; causes TOC to fail when clicking on links; EX:about:blank#TOC1; DATE:2015-06-09
if (html_box.Browser_tid() == Swt_html.Browser_tid_webkit
&& String_.Has_at_bgn(location, "about:blank")) {
location = String_.Mid(location, 11); // 11 = "about:blank".length
}
// 2020-09-19|ISSUE#:799|strip "about:/" from url due to SWT 4.16
location = Swt_html.StripAboutFromUrl(location);
// navigating to file://page.html will fire location event; ignore if url mode
if (html_box.Html_doc_html_load_tid() == Gxw_html_load_tid_.Tid_url
&& String_.Has_at_bgn(location, "file:")
&& String_.Has_at_end(location, ".html")
) {
return;
}
try {
Gfo_evt_mgr_.Pub_obj(host, evt, "v", location);
arg.doit = false; // cancel navigation event, else there will be an error when trying to go to invalid location
}
catch (Exception e) {html_box.Kit().Ask_ok("xowa.gui.html_box", evt, Err_.Message_gplx_full(e));} // NOTE: must catch error or will cause app to lock; currently called inside displaySync
}
}
class Swt_html_lnr_mouse implements MouseListener {
private GxwElem elem; private Browser browser; private Swt_kit kit;
public Swt_html_lnr_mouse(GxwElem elem, Browser browser, Swt_kit kit) {this.elem = elem; this.browser = browser; this.kit = kit;}
@Override public void mouseDown(MouseEvent ev) {
if (Is_at_scrollbar_area()) return;
elem.Host().MouseDownCbk(XtoMouseData(ev));
}
@Override public void mouseUp(MouseEvent ev) {
if (Is_at_scrollbar_area()) return;
elem.Host().MouseUpCbk(XtoMouseData(ev));
}
private boolean Is_at_scrollbar_area() {
// WORKAROUND.SWT: SEE:NOTE_1:browser scrollbar and click
Point browser_size = browser.getSize();
Point click_pos = kit.Swt_display().getCursorLocation();
return click_pos.x >= browser_size.x - 12;
}
@Override public void mouseDoubleClick(MouseEvent ev) {}
IptEvtDataMouse XtoMouseData(MouseEvent ev) {
IptMouseBtn btn = null;
switch (ev.button) {
case 1: btn = IptMouseBtn_.Left; break;
case 2: btn = IptMouseBtn_.Middle; break;
case 3: btn = IptMouseBtn_.Right; break;
case 4: btn = IptMouseBtn_.X1; break;
case 5: btn = IptMouseBtn_.X2; break;
}
return IptEvtDataMouse.new_(btn, IptMouseWheel_.None, ev.x, ev.y);
}
}
class Swt_html_lnr_wheel implements MouseWheelListener {
private final Swt_html html_box;
public Swt_html_lnr_wheel(Swt_html html_box) {
this.html_box = html_box;
}
@Override public void mouseScrolled(MouseEvent evt) {
if (evt.stateMask == SWT.CTRL) { // ctrl held;
Gfo_evt_mgr_.Pub_obj(html_box, Gfui_html.Evt_zoom_changed, "clicks_is_positive", evt.count > 0);
}
}
}
//class Swt_open_window_listener implements OpenWindowListener {
// private final Swt_html html_box;
// public Swt_open_window_listener(Swt_html html_box) {this.html_box = html_box;}
// @Override public void open(WindowEvent arg0) {
// Tfds.Write();
// }
//}
/*
NOTE_1:browser scrollbar and click
a click in the scrollbar area will raise a mouse-down/mouse-up event in content-editable mode
. a click should be consumed by the scrollbar and not have any effect elsewhere on the window
. instead, a click event is raised, and counted twice
1) for the scroll bar this will scroll the area.
2) for the window. if keyboard-focus is set on a link, then it will activate the link.
swt does not expose any scrollbar information (visible, width), b/c the scrollbar is controlled by the underlying browser
so, assume:
. scrollbar is always present
. scrollbar has arbitrary width (currently 12)
. and discard if click is in this scrollbar area
two issues still occur with the workaround
1) even if the scrollbar is not present, any click on the right-hand edge of the screen will be ignored
2) click -> hold -> move mouse over to left -> release; the mouse up should be absorbed, but it is not due to position of release
*/

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