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298 lines
16 KiB
Java
298 lines
16 KiB
Java
/*
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XOWA: the XOWA Offline Wiki Application
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Copyright (C) 2012 gnosygnu@gmail.com
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package gplx.gfui;
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import java.security.acl.Owner;
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import gplx.*;
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import gplx.threads.ThreadAdp_;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.browser.*;
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import org.eclipse.swt.events.*;
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import org.eclipse.swt.graphics.*;
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import org.eclipse.swt.widgets.*;
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class Swt_html implements Gxw_html, Swt_control, FocusListener {
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private Swt_html_lnr_location lnr_location; private Swt_html_lnr_status lnr_status;
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public Swt_html(Swt_kit kit, Swt_control owner_control, KeyValHash ctorArgs) {
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this.kit = kit;
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lnr_location = new Swt_html_lnr_location(this);
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lnr_status = new Swt_html_lnr_status(this);
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int browser_type = Swt_html.Browser_tid_none;
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Object browser_type_obj = ctorArgs.FetchValOr(Swt_kit.Cfg_Html_BrowserType, null);
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if (browser_type_obj != null) browser_type = Int_.cast_(browser_type_obj);
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browser = new Browser(owner_control.Under_composite(), browser_type);
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core = new Swt_core_cmds_html(this, browser);
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browser.addKeyListener(new Swt_lnr_key(this));
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browser.addMouseListener(new Swt_html_lnr_mouse(this, browser, kit));
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browser.addLocationListener(lnr_location);
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browser.addProgressListener(new Swt_html_lnr_progress(this));
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browser.addStatusTextListener(lnr_status);
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browser.addFocusListener(this);
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browser.addTitleListener(new Swt_html_lnr_title(this));
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// browser.addTraverseListener(new Swt_html_lnr_Traverse(this));
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}
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public Swt_kit Kit() {return kit;} private Swt_kit kit;
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@Override public Control Under_control() {return browser;} private Browser browser;
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@Override public Composite Under_composite() {return null;}
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@Override public Control Under_menu_control() {return browser;}
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public String Html_doc_html() {return Eval_script_as_str(kit.Html_cfg().Doc_html());}
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public void Html_doc_html_load_by_mem(String html) {
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html_doc_html_load_tid = Gxw_html_load_tid_.Tid_mem;
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browser.setText(html); // DBG: Io_mgr._.SaveFilStr(Io_url_.new_fil_("C:\\temp.txt"), s)
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}
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public void Html_doc_html_load_by_url(String path, String html) {
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html_doc_html_load_tid = Gxw_html_load_tid_.Tid_url;
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Io_mgr._.SaveFilStr(path, html);
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browser.setUrl(path);
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}
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public byte Html_doc_html_load_tid() {return html_doc_html_load_tid;} private byte html_doc_html_load_tid;
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public void Html_doc_html_load_tid_(byte v) {html_doc_html_load_tid = v;}
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public String Html_doc_selected_get_text_or_href() {return Eval_script_as_str(kit.Html_cfg().Doc_selected_get_text_or_href());}
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public String Html_doc_selected_get_href_or_text() {return Eval_script_as_str(kit.Html_cfg().Doc_selected_get_href_or_text());}
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public String Html_doc_selected_get_src_or_empty() {return Eval_script_as_str(kit.Html_cfg().Doc_selected_get_src_or_empty());}
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public String Html_doc_selected_get_active_or_selection() {return Eval_script_as_str(kit.Html_cfg().Doc_selected_get_active_or_selection());}
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public void Html_doc_body_focus() {Eval_script_as_exec(kit.Html_cfg().Doc_body_focus());}
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public void Html_doc_selection_focus_toggle() {Eval_script_as_exec(kit.Html_cfg().Doc_selection_focus_toggle());}
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public String Html_elem_atr_get_str(String elem_id, String atr_key) {return Eval_script_as_str(kit.Html_cfg().Elem_atr_get(elem_id, atr_key));}
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public boolean Html_elem_atr_get_bool(String elem_id, String atr_key) {return Bool_.parse_((String)Eval_script(kit.Html_cfg().Elem_atr_get_toString(elem_id, atr_key)));}
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public Object Html_elem_atr_get_obj(String elem_id, String atr_key) {return Eval_script(kit.Html_cfg().Elem_atr_get(elem_id, atr_key));}
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public boolean Html_elem_atr_set(String elem_id, String atr_key, String atr_val){return Eval_script_as_exec(kit.Html_cfg().Elem_atr_set(elem_id, atr_key, Escape_quotes(atr_val)));}
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public boolean Html_elem_atr_set_append(String elem_id, String atr_key, String atr_val)
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{return Eval_script_as_exec(kit.Html_cfg().Elem_atr_set_append(elem_id, atr_key, Escape_quotes(atr_val)));}
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public boolean Html_elem_delete(String elem_id) {return Eval_script_as_exec(kit.Html_cfg().Elem_delete(elem_id));}
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public boolean Html_elem_replace_html(String id, String html) {return Eval_script_as_exec(kit.Html_cfg().Elem_replace_html(id, html));}
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public boolean Html_gallery_packed_exec() {return Eval_script_as_exec(kit.Html_cfg().Gallery_packed_exec());}
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public boolean Html_elem_focus(String elem_id) {return Eval_script_as_exec(kit.Html_cfg().Elem_focus(elem_id));}
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public boolean Html_elem_scroll_into_view(String id) {return Eval_script_as_bool(kit.Html_cfg().Elem_scroll_into_view(Escape_quotes(id)));}
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public String Html_window_vpos() {return Eval_script_as_str(kit.Html_cfg().Window_vpos());}
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public boolean Html_window_print_preview() {return Eval_script_as_bool(kit.Html_cfg().Window_print_preview());}
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public void Html_js_enabled_(boolean v) {browser.setJavascriptEnabled(v);}
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public void Html_js_cbks_add(String func_name, GfoInvkAble invk) {new Swt_html_func(browser, func_name, invk);}
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public String Html_js_eval_script(String script) {return Eval_script_as_str(script);}
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public boolean Html_elem_img_update(String elem_id, String elem_src, int elem_width, int elem_height) {
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elem_src = Escape_quotes(elem_src);
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int count = 0;
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while (count < 5) {
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boolean rv = Eval_script_as_bool(kit.Html_cfg().Elem_img_update(elem_id, elem_src, elem_width, elem_height));
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if (rv) return rv;
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ThreadAdp_.Sleep(100);
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count++;
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}
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return false;
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}
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public String Html_active_atr_get_str(String atr_key, String or) {
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Object rv_obj = Eval_script(kit.Html_cfg().Active_atr_get_str(atr_key));
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String rv = (String)rv_obj;
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return rv == null || !eval_rslt.Result_pass() ? or : rv;
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}
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public void Html_js_eval_proc(String proc, String... args) {
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Bry_fmtr fmtr = kit.Html_cfg().Js_scripts_get(proc);
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String script = fmtr.Bld_str_many(args);
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Eval_script(script);
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}
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public boolean Html_window_vpos_(String v) {
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Gfui_html_cfg.Html_window_vpos_parse(v, scroll_top, node_path);
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return Eval_script_as_exec(kit.Html_cfg().Window_vpos_(node_path.Val(), scroll_top.Val()));
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} private String_obj_ref scroll_top = String_obj_ref.null_(), node_path = String_obj_ref.null_();
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public boolean Html_doc_find(String elem_id, String find, boolean dir_fwd, boolean case_match, boolean wrap_find) {
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if (String_.Eq(find, String_.Empty)) return false;
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find = String_.Replace(find, "\\", "\\\\"); // escape \ -> \\
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find = String_.Replace(find, "'", "\\'"); // escape ' -> \'; NOTE: \\' instead of \'
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boolean search_text_is_diff = !String_.Eq(find, prv_find_str);
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prv_find_str = find;
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String script = String_.Eq(elem_id, Gfui_html.Elem_id_body)
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? kit.Html_cfg().Doc_find_html(find, dir_fwd, case_match, wrap_find, search_text_is_diff, prv_find_bgn)
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: kit.Html_cfg().Doc_find_edit(find, dir_fwd, case_match, wrap_find, search_text_is_diff, prv_find_bgn);
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Object result_obj = Eval_script(script);
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try {prv_find_bgn = (int)Double_.cast_(result_obj);}
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catch (Exception e) {Err_.Noop(e); return false;}
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return true;
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} private String prv_find_str = ""; private int prv_find_bgn;
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public void Html_invk_src_(GfoEvObj invk) {lnr_location.Host_set(invk); lnr_status.Host_set(invk);}
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public void Html_dispose() {
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browser.dispose();
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delete_owner.SubElems().DelOrFail(delete_cur); // NOTE: must delete cur from owner, else new tab will fail after closing one; DATE:2014-07-09
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Env_.GarbageCollect();
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}
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private GfuiElem delete_owner, delete_cur;
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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;
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private String Escape_quotes(String v) {return String_.Replace(String_.Replace(v, "'", "\\'"), "\"", "\\\"");}
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@Override public GxwCore_base Core() {return core;} private GxwCore_base core;
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@Override public GxwCbkHost Host() {return host;} @Override public void Host_set(GxwCbkHost host) {this.host = host;} GxwCbkHost host;
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@Override public String TextVal() {return browser.getText();}
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@Override public void TextVal_set(String v) {browser.setText(v);}
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@Override public void EnableDoubleBuffering() {}
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@Override public Object Invk(GfsCtx ctx, int ikey, String k, GfoMsg m) {return GfoInvkAble_.Rv_unhandled;}
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private boolean Eval_script_as_bool(String script) {
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Object result_obj = Eval_script(script);
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return eval_rslt.Result_pass() && Bool_.cast_or_(result_obj, false);
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}
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private boolean Eval_script_as_exec(String script) {Eval_script(script); return eval_rslt.Result_pass();}
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private String Eval_script_as_str(String script) {return (String)Eval_script(script);}
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public Object Eval_script(String script) {
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eval_rslt.Clear();
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try {
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eval_rslt.Result_set(browser.evaluate(script));
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return eval_rslt.Result();
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}
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catch (Exception e) {eval_rslt.Error_set(e.getMessage()); return eval_rslt.Error();}
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} private Swt_html_eval_rslt eval_rslt = new Swt_html_eval_rslt();
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@Override public void focusGained(FocusEvent arg0) {
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// if (!focus_acquired && Swt_kit.Html_box_focus_automatically) {
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// browser.forceFocus();
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// focus_acquired = true;
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// HtmlBox_focus();
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// }
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} //boolean focus_acquired = false;
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@Override public void focusLost(FocusEvent arg0) {
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// focus_acquired = false;
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}
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public static final int
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Browser_tid_none = SWT.NONE
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, Browser_tid_mozilla = SWT.MOZILLA
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, Browser_tid_webKit = SWT.WEBKIT
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;
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}
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class Swt_core_cmds_html extends Swt_core_cmds {
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public Swt_core_cmds_html(Swt_html html_box, Control control) {super(control); this.html_box = html_box;} Swt_html html_box;
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@Override public void Focus() {
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if (Focus_able())
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control.forceFocus();
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}
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@Override public void Select_exec() {
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this.Focus();
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}
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}
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class Swt_html_eval_rslt {
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public void Clear() {error = null; result = null;}
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public boolean Result_pass() {return error == null;}
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public Object Result() {return result;} public void Result_set(Object v) {result = v; error = null;} Object result;
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public String Error () {return error;} public void Error_set(String v) {error = v; result = null;} String error;
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}
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class Swt_html_lnr_Traverse implements TraverseListener {
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public Swt_html_lnr_Traverse(Swt_html html_box) {this.html_box = html_box;} Swt_html html_box;
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@Override public void keyTraversed(TraverseEvent arg0) {}
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}
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class Swt_html_lnr_title implements TitleListener {
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public Swt_html_lnr_title(Swt_html html_box) {this.html_box = html_box;} Swt_html html_box;
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@Override public void changed(TitleEvent ev) {
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try {UsrDlg_._.Note(ev.title);}
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catch (Exception e) {html_box.Kit().Ask_ok("xowa.swt.html_box", "title.fail", Err_.Message_gplx_brief(e));} // NOTE: must catch error or will cause app to lock; currently called inside displaySync
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}
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}
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class Swt_html_func extends BrowserFunction {
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public Swt_html_func(Browser browser, String name, GfoInvkAble invk) {
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super (browser, name);
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this.browser = browser;
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this.invk = invk;
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} Browser browser; GfoInvkAble invk;
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public Object function (Object[] args) {
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try {
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return gplx.gfui.Gfui_html.Js_args_exec(invk, args);
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}
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catch (Exception e) {
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return Err_.Message_gplx_brief(e);
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}
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}
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}
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class Swt_html_lnr_status implements StatusTextListener {
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public Swt_html_lnr_status(Swt_html html_box) {this.html_box = html_box;} Swt_html html_box;
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public void Host_set(GfoEvObj host) {this.host = host;} GfoEvObj host;
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@Override public void changed(StatusTextEvent ev) {
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if (html_box.Kit().Mode_is_shutdown())
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return; // shutting down raises status changed events; ignore, else SWT exception thrown; DATE:2014-05-29
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String ev_text = ev.text;
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// 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
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try {if (host != null) GfoEvMgr_.PubObj(host, Gfui_html.Evt_link_hover, "v", ev_text);}
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catch (Exception e) {html_box.Kit().Ask_ok("xowa.gui.html_box", "status.fail", Err_.Message_gplx_brief(e));} // NOTE: must catch error or will cause app to lock; currently called inside displaySync
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}
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}
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class Swt_html_lnr_progress implements ProgressListener {
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public Swt_html_lnr_progress(Swt_html html_box) {this.html_box = html_box;} Swt_html html_box;
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@Override public void changed(ProgressEvent arg0) {}
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@Override public void completed(ProgressEvent arg0) {
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// UsrDlg_._.Note("done");
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}
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}
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class Swt_html_lnr_location implements LocationListener {
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public Swt_html_lnr_location(Swt_html html_box) {this.html_box = html_box;} Swt_html html_box;
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public void Host_set(GfoEvObj host) {this.host = host;} GfoEvObj host;
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@Override public void changed(LocationEvent arg) {Pub_evt(arg, Gfui_html.Evt_location_changed);}
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@Override public void changing(LocationEvent arg) {Pub_evt(arg, Gfui_html.Evt_location_changing);}
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void Pub_evt(LocationEvent arg, String evt) {
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String location = arg.location;
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if (String_.Eq(location, "about:blank")) return; // location changing event fires once when page is loaded; ignore
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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
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&& String_.HasAtBgn(location, "file:")
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&& String_.HasAtEnd(location, ".html")
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)
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return;
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try {
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GfoEvMgr_.PubObj(host, evt, "v", location);
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arg.doit = false; // cancel navigation event, else there will be an error when trying to go to invalid location
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}
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catch (Exception e) {html_box.Kit().Ask_ok("xowa.gui.html_box", evt, Err_.Message_gplx_brief(e));} // NOTE: must catch error or will cause app to lock; currently called inside displaySync
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}
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}
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class Swt_html_lnr_mouse implements MouseListener {
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public Swt_html_lnr_mouse(GxwElem elem, Browser browser, Swt_kit kit) {this.elem = elem; this.browser = browser; this.kit = kit;} GxwElem elem; Browser browser; Swt_kit kit;
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@Override public void mouseDown(MouseEvent ev) {
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if (Is_at_scrollbar_area()) return;
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elem.Host().MouseDownCbk(XtoMouseData(ev));
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}
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@Override public void mouseUp(MouseEvent ev) {
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if (Is_at_scrollbar_area()) return;
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elem.Host().MouseUpCbk(XtoMouseData(ev));
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}
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boolean Is_at_scrollbar_area() {
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// WORKAROUND.SWT: SEE:NOTE_1:browser scrollbar and click
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Point browser_size = browser.getSize();
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Point click_pos = kit.Swt_display().getCursorLocation();
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return click_pos.x >= browser_size.x - 12;
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}
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@Override public void mouseDoubleClick(MouseEvent ev) {}
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IptEvtDataMouse XtoMouseData(MouseEvent ev) {
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IptMouseBtn btn = null;
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switch (ev.button) {
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case 1: btn = IptMouseBtn_.Left; break;
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case 2: btn = IptMouseBtn_.Middle; break;
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case 3: btn = IptMouseBtn_.Right; break;
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case 4: btn = IptMouseBtn_.X1; break;
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case 5: btn = IptMouseBtn_.X2; break;
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}
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return IptEvtDataMouse.new_(btn, IptMouseWheel_.None, ev.x, ev.y);
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}
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}
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/*
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NOTE_1:browser scrollbar and click
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a click in the scrollbar area will raise a mouse-down/mouse-up event in content-editable mode
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. a click should be consumed by the scrollbar and not have any effect elsewhere on the window
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. instead, a click event is raised, and counted twice
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1) for the scroll bar this will scroll the area.
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2) for the window. if keyboard-focus is set on a link, then it will activate the link.
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swt does not expose any scrollbar information (visible, width), b/c the scrollbar is controlled by the underlying browser
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so, assume:
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. scrollbar is always present
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. scrollbar has arbitrary width (currently 12)
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. and discard if click is in this scrollbar area
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two issues still occur with the workaround
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1) even if the scrollbar is not present, any click on the right-hand edge of the screen will be ignored
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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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*/
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