PHP DifferenceEngine::showDiff方法代码示例

//.........这里部分代码省略.........
        if (count($articleTemplates) > 0) {
            $templates = '<br />' . wfMsg('templatesused') . '<ul>';
            foreach ($articleTemplates as $tpl) {
                if ($titleObj = Title::makeTitle(NS_TEMPLATE, $tpl)) {
                    $templates .= '<li>' . $sk->makeLinkObj($titleObj) . '</li>';
                }
            }
            $templates .= '</ul>';
        }
        global $wgLivePreview, $wgStylePath;
        /**
         * Live Preview lets us fetch rendered preview page content and
         * add it to the page without refreshing the whole page.
         * Set up the button for it; if not supported by the browser
         * it will fall through to the normal form submission method.
         */
        if ($wgLivePreview) {
            global $wgJsMimeType;
            $wgOut->addHTML('<script type="' . $wgJsMimeType . '" src="' . htmlspecialchars($wgStylePath . '/common/preview.js') . '"></script>' . "\n");
            $liveAction = $wgTitle->getLocalUrl('action=submit&wpPreview=true&live=true');
            $liveOnclick = 'onclick="return !livePreview(' . 'getElementById(\'wikiPreview\'),' . 'editform.wpTextbox1.value,' . htmlspecialchars('"' . $liveAction . '"') . ')"';
        } else {
            $liveOnclick = '';
        }
        global $wgUseMetadataEdit;
        if ($wgUseMetadataEdit) {
            $metadata = $this->mMetaData;
            $metadata = htmlspecialchars($wgContLang->recodeForEdit($metadata));
            $helppage = Title::newFromText(wfmsg("metadata_page"));
            $top = str_replace("\$1", $helppage->getInternalURL(), wfmsg("metadata"));
            $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>";
        } else {
            $metadata = "";
        }
        $safemodehtml = $this->checkUnicodeCompliantBrowser() ? "" : "<input type='hidden' name=\"safemode\" value='1' />\n";
        # Patch for FCKeditor
        global $wgUseEditor, $wgEditorDir, $wgEditorToken, $wgScriptPath, $wgEditorToolbarSet, $wgEditorHeight;
        $tbox = $wgContLang->recodeForEdit($this->textbox1);
        if ($wgUseEditor || isset($wgEditorToken) && eregi($wgEditorToken, $tbox, $eregi_result)) {
            $wgUseEditor = true;
            $wgOut->addHTML("\n{$toolbar}\n<form id=\"editform\" name=\"editform\" method=\"post\" action=\"{$action}\"\nenctype=\"multipart/form-data\">\n{$commentsubject}");
            require_once "{$wgEditorDir}/fckeditor.php";
            $oFCKeditor = new FCKeditor('wpTextbox1');
            $oFCKeditor->BasePath = $wgScriptPath . "/" . $wgEditorDir . "/";
            $oFCKeditor->Value = $tbox;
            $oFCKeditor->ToolbarSet = $wgEditorToolbarSet;
            $oFCKeditor->Height = $wgEditorHeight;
            $oFCKeditor->Width = '100%';
            $wgOut->addHTML($oFCKeditor->CreateHtml());
            /*
            <textarea tabindex='1' accesskey="," name="wpTextbox1" rows='{$rows}'
            cols='{$cols}'{$ew}>
            END
            . htmlspecialchars( $wgContLang->recodeForEdit( $this->textbox1 ) ) .
            "
            </textarea>
            */
            $wgOut->addHTML("\n{$metadata}\n<br />{$editsummary}\n{$checkboxhtml}\n{$safemodehtml}\n<input tabindex='5' id='wpSave' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"" . wfMsg('accesskey-save') . "\"" . " title=\"" . wfMsg('tooltip-save') . "\"/>\n<input tabindex='6' id='wpPreview' type='submit' {$liveOnclick} value=\"{$prev}\" name=\"wpPreview\" accesskey=\"" . wfMsg('accesskey-preview') . "\"" . " title=\"" . wfMsg('tooltip-preview') . "\"/>\n<input tabindex='7' id='wpDiff' type='submit' value=\"{$diff}\" name=\"wpDiff\" accesskey=\"" . wfMsg('accesskey-diff') . "\"" . " title=\"" . wfMsg('tooltip-diff') . "\"/>\n<em>{$cancel}</em> | <em>{$edithelp}</em>{$templates}");
        } else {
            # end patch
            $wgOut->addHTML(<<<END
{$toolbar}
<form id="editform" name="editform" method="post" action="{$action}"
enctype="multipart/form-data">
{$commentsubject}
<textarea tabindex='1' accesskey="," name="wpTextbox1" rows='{$rows}'
cols='{$cols}'{$ew}>
END
 . htmlspecialchars($this->safeUnicodeOutput($this->textbox1)) . "\n</textarea>\n{$metadata}\n<br />{$editsummary}\n{$checkboxhtml}\n{$safemodehtml}\n<input tabindex='5' id='wpSave' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"" . wfMsg('accesskey-save') . "\"" . " title=\"" . wfMsg('tooltip-save') . "\"/>\n<input tabindex='6' id='wpPreview' type='submit' {$liveOnclick} value=\"{$prev}\" name=\"wpPreview\" accesskey=\"" . wfMsg('accesskey-preview') . "\"" . " title=\"" . wfMsg('tooltip-preview') . "\"/>\n<input tabindex='7' id='wpDiff' type='submit' value=\"{$diff}\" name=\"wpDiff\" accesskey=\"" . wfMsg('accesskey-diff') . "\"" . " title=\"" . wfMsg('tooltip-diff') . "\"/>\n<em>{$cancel}</em> | <em>{$edithelp}</em>{$templates}");
        }
        $wgOut->addWikiText($copywarn);
        $wgOut->addHTML("\n<input type='hidden' value=\"" . htmlspecialchars($this->section) . "\" name=\"wpSection\" />\n<input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n");
        if ($wgUser->isLoggedIn()) {
            /**
             * To make it harder for someone to slip a user a page
             * which submits an edit form to the wiki without their
             * knowledge, a random token is associated with the login
             * session. If it's not passed back with the submission,
             * we won't save the page, or render user JavaScript and
             * CSS previews.
             */
            $token = htmlspecialchars($wgUser->editToken());
            $wgOut->addHTML("\n<input type='hidden' value=\"{$token}\" name=\"wpEditToken\" />\n");
        }
        if ($isConflict) {
            require_once "DifferenceEngine.php";
            $wgOut->addWikiText('==' . wfMsg("yourdiff") . '==');
            DifferenceEngine::showDiff($this->textbox2, $this->textbox1, wfMsg("yourtext"), wfMsg("storedversion"));
            $wgOut->addWikiText('==' . wfMsg("yourtext") . '==');
            $wgOut->addHTML("<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>" . htmlspecialchars($this->safeUnicodeOutput($this->textbox2)) . "\n</textarea>");
        }
        $wgOut->addHTML("</form>\n");
        if ($formtype == 'preview' && !$wgUser->getOption('previewontop')) {
            $wgOut->addHTML('<div id="wikiPreview">' . $previewOutput . '</div>');
        }
        if ($formtype == 'diff' && !$wgUser->getOption('previewontop')) {
            #$wgOut->addHTML( '<div id="wikiPreview">' . $difftext . '</div>' );
            $wgOut->addHTML($this->getDiff());
        }
    }

//.........这里部分代码省略.........
            } else {
                // Hide the toolbar and edit area, user can click preview to get it back
                // Add an confirmation checkbox and explanation.
                $toolbar = '';
                $recreate = '<div class="mw-confirm-recreate">' . $wgOut->parse(wfMsg('confirmrecreate', $this->lastDelete->user_name, $this->lastDelete->log_comment)) . Xml::checkLabel(wfMsg('recreate'), 'wpRecreate', 'wpRecreate', false, array('title' => $sk->titleAttrib('recreate'), 'tabindex' => 1, 'id' => 'wpRecreate')) . '</div>';
            }
        }
        $tabindex = 2;
        $checkboxes = $this->getCheckboxes($tabindex, $sk, array('minor' => $this->minoredit, 'watch' => $this->watchthis, 'want_traditional_editor' => $this->userWantsTraditionalEditor));
        $checkboxhtml = implode($checkboxes, "\n");
        $buttons = $this->getEditButtons($tabindex);
        $buttonshtml = implode($buttons, "\n");
        $safemodehtml = $this->checkUnicodeCompliantBrowser() ? '' : Xml::hidden('safemode', '1');
        $wgOut->addHTML(<<<END
{$toolbar}
<form id="editform" name="editform" method="post" action="{$action}" enctype="multipart/form-data">
END
);
        if (is_callable($formCallback)) {
            call_user_func_array($formCallback, array(&$wgOut));
        }
        wfRunHooks('EditPage::showEditForm:fields', array(&$this, &$wgOut));
        // Put these up at the top to ensure they aren't lost on early form submission
        $this->showFormBeforeText();
        $wgOut->addHTML(<<<END
{$recreate}
{$commentsubject}
{$subjectpreview}
{$this->editFormTextBeforeContent}
END
);
        if ($this->isConflict || $this->diff) {
            # MeanEditor: should be redundant, but let's be sure
            $this->noVisualEditor = true;
        }
        # MeanEditor: also apply htmlspecialchars? See $encodedtext
        $html_text = $this->safeUnicodeOutput($this->textbox1);
        if (!($this->noVisualEditor || $this->userWantsTraditionalEditor)) {
            $this->noVisualEditor = wfRunHooks('EditPage::wiki2html', array($this->mArticle, $wgUser, &$this, &$html_text));
        }
        if (!$this->noVisualEditor && !$this->userWantsTraditionalEditor) {
            $this->noVisualEditor = wfRunHooks('EditPage::showBox', array(&$this, $html_text, $rows, $cols, $ew));
        }
        if (!$this->noVisualEditor && !$this->userWantsTraditionalEditor) {
            $wgOut->addHTML("<input type='hidden' value=\"0\" name=\"wpNoVisualEditor\" />\n");
        } else {
            $wgOut->addHTML("<input type='hidden' value=\"1\" name=\"wpNoVisualEditor\" />\n");
            $this->showTextbox1($classes);
        }
        $wgOut->wrapWikiMsg("<div id=\"editpage-copywarn\">\n\$1\n</div>", $copywarnMsg);
        $wgOut->addHTML(<<<END
{$this->editFormTextAfterWarn}
{$metadata}
{$editsummary}
{$summarypreview}
{$checkboxhtml}
{$safemodehtml}
END
);
        $wgOut->addHTML("<div class='editButtons'>\n{$buttonshtml}\n\t<span class='editHelp'>{$cancel}{$separator}{$edithelp}</span>\n</div><!-- editButtons -->\n</div><!-- editOptions -->");
        /**
         * To make it harder for someone to slip a user a page
         * which submits an edit form to the wiki without their
         * knowledge, a random token is associated with the login
         * session. If it's not passed back with the submission,
         * we won't save the page, or render user JavaScript and
         * CSS previews.
         *
         * For anon editors, who may not have a session, we just
         * include the constant suffix to prevent editing from
         * broken text-mangling proxies.
         */
        $token = htmlspecialchars($wgUser->editToken());
        $wgOut->addHTML("\n<input type='hidden' value=\"{$token}\" name=\"wpEditToken\" />\n");
        $this->showEditTools();
        $wgOut->addHTML(<<<END
{$this->editFormTextAfterTools}
<div class='templatesUsed'>
{$formattedtemplates}
</div>
<div class='hiddencats'>
{$formattedhiddencats}
</div>
END
);
        if ($this->isConflict && wfRunHooks('EditPageBeforeConflictDiff', array(&$this, &$wgOut))) {
            $wgOut->wrapWikiMsg('==$1==', "yourdiff");
            $de = new DifferenceEngine($this->mTitle);
            $de->setText($this->textbox2, $this->textbox1);
            $de->showDiff(wfMsg("yourtext"), wfMsg("storedversion"));
            $wgOut->wrapWikiMsg('==$1==', "yourtext");
            $this->showTextbox2();
        }
        $wgOut->addHTML($this->editFormTextBottom);
        $wgOut->addHTML("</form>\n");
        if (!$wgUser->getOption('previewontop')) {
            $this->displayPreviewArea($previewOutput, false);
        }
        wfProfileOut($fname);
    }

 public function onView()
 {
     $details = null;
     $request = $this->getRequest();
     $result = $this->page->doRollback($request->getVal('from'), $request->getText('summary'), $request->getVal('token'), $request->getBool('bot'), $details, $this->getUser());
     if (in_array(array('actionthrottledtext'), $result)) {
         throw new ThrottledError();
     }
     if (isset($result[0][0]) && ($result[0][0] == 'alreadyrolled' || $result[0][0] == 'cantrollback')) {
         $this->getOutput()->setPageTitle($this->msg('rollbackfailed'));
         $errArray = $result[0];
         $errMsg = array_shift($errArray);
         $this->getOutput()->addWikiMsgArray($errMsg, $errArray);
         if (isset($details['current'])) {
             $current = $details['current'];
             if ($current->getComment() != '') {
                 $this->getOutput()->addHTML($this->msg('editcomment')->rawParams(Linker::formatComment($current->getComment()))->parse());
             }
         }
         return;
     }
     # Display permissions errors before read-only message -- there's no
     # point in misleading the user into thinking the inability to rollback
     # is only temporary.
     if (!empty($result) && $result !== array(array('readonlytext'))) {
         # array_diff is completely broken for arrays of arrays, sigh.
         # Remove any 'readonlytext' error manually.
         $out = array();
         foreach ($result as $error) {
             if ($error != array('readonlytext')) {
                 $out[] = $error;
             }
         }
         throw new PermissionsError('rollback', $out);
     }
     if ($result == array(array('readonlytext'))) {
         throw new ReadOnlyError();
     }
     $current = $details['current'];
     $target = $details['target'];
     $newId = $details['newid'];
     $this->getOutput()->setPageTitle($this->msg('actioncomplete'));
     $this->getOutput()->setRobotPolicy('noindex,nofollow');
     if ($current->getUserText() === '') {
         $old = $this->msg('rev-deleted-user')->escaped();
     } else {
         $old = Linker::userLink($current->getUser(), $current->getUserText()) . Linker::userToolLinks($current->getUser(), $current->getUserText());
     }
     $new = Linker::userLink($target->getUser(), $target->getUserText()) . Linker::userToolLinks($target->getUser(), $target->getUserText());
     $this->getOutput()->addHTML($this->msg('rollback-success')->rawParams($old, $new)->parseAsBlock());
     $this->getOutput()->returnToMain(false, $this->getTitle());
     if (!$request->getBool('hidediff', false) && !$this->getUser()->getBoolOption('norollbackdiff', false)) {
         $de = new DifferenceEngine($this->getContext(), $current->getId(), $newId, false, true);
         $de->showDiff('', '');
     }
 }

 /**
  * Show "your edit contains spam" page with your diff and text
  *
  * @param $match Text which triggered one or more filters
  */
 public function spamPageWithContent($match = false)
 {
     global $wgOut;
     $this->textbox2 = $this->textbox1;
     $wgOut->prepareErrorPage(wfMessage('spamprotectiontitle'));
     $wgOut->addHTML('<div id="spamprotected">');
     $wgOut->addWikiMsg('spamprotectiontext');
     if ($match) {
         $wgOut->addWikiMsg('spamprotectionmatch', wfEscapeWikiText($match));
     }
     $wgOut->addHTML('</div>');
     $wgOut->wrapWikiMsg('<h2>$1</h2>', "yourdiff");
     $de = new DifferenceEngine($this->mArticle->getContext());
     $de->setText($this->getCurrentText(), $this->textbox2);
     $de->showDiff(wfMsg("storedversion"), wfMsgExt('yourtext', 'parseinline'));
     $wgOut->wrapWikiMsg('<h2>$1</h2>', "yourtext");
     $this->showTextbox2();
     $wgOut->addReturnTo($this->getContextTitle(), array('action' => 'edit'));
 }

 /**
  * User interface for rollback operations
  */
 public function rollback()
 {
     global $wgUser, $wgOut, $wgRequest;
     $details = null;
     $result = $this->doRollback($wgRequest->getVal('from'), $wgRequest->getText('summary'), $wgRequest->getVal('token'), $wgRequest->getBool('bot'), $details);
     if (in_array(array('actionthrottledtext'), $result)) {
         $wgOut->rateLimited();
         return;
     }
     if (isset($result[0][0]) && ($result[0][0] == 'alreadyrolled' || $result[0][0] == 'cantrollback')) {
         $wgOut->setPageTitle(wfMsg('rollbackfailed'));
         $errArray = $result[0];
         $errMsg = array_shift($errArray);
         $wgOut->addWikiMsgArray($errMsg, $errArray);
         if (isset($details['current'])) {
             $current = $details['current'];
             if ($current->getComment() != '') {
                 $wgOut->addWikiMsgArray('editcomment', array($wgUser->getSkin()->formatComment($current->getComment())), array('replaceafter'));
             }
         }
         return;
     }
     # Display permissions errors before read-only message -- there's no
     # point in misleading the user into thinking the inability to rollback
     # is only temporary.
     if (!empty($result) && $result !== array(array('readonlytext'))) {
         # array_diff is completely broken for arrays of arrays, sigh.
         # Remove any 'readonlytext' error manually.
         $out = array();
         foreach ($result as $error) {
             if ($error != array('readonlytext')) {
                 $out[] = $error;
             }
         }
         $wgOut->showPermissionsErrorPage($out);
         return;
     }
     if ($result == array(array('readonlytext'))) {
         $wgOut->readOnlyPage();
         return;
     }
     $current = $details['current'];
     $target = $details['target'];
     $newId = $details['newid'];
     $wgOut->setPageTitle(wfMsg('actioncomplete'));
     $wgOut->setRobotPolicy('noindex,nofollow');
     if ($current->getUserText() === '') {
         $old = wfMsg('rev-deleted-user');
     } else {
         $old = $wgUser->getSkin()->userLink($current->getUser(), $current->getUserText()) . $wgUser->getSkin()->userToolLinks($current->getUser(), $current->getUserText());
     }
     $new = $wgUser->getSkin()->userLink($target->getUser(), $target->getUserText()) . $wgUser->getSkin()->userToolLinks($target->getUser(), $target->getUserText());
     $wgOut->addHTML(wfMsgExt('rollback-success', array('parse', 'replaceafter'), $old, $new));
     $wgOut->returnToMain(false, $this->mTitle);
     if (!$wgRequest->getBool('hidediff', false) && !$wgUser->getBoolOption('norollbackdiff', false)) {
         $de = new DifferenceEngine($this->mTitle, $current->getId(), $newId, false, true);
         $de->showDiff('', '');
     }
 }

	/**
	 * Output a trimmed down diff view corresponding to a particular change
	 *
	 * @param $edit Recent change to produce a diff. for
	 */
	private function showDiff( &$edit ) {
		$diff = new DifferenceEngine( $edit->getTitle(), $edit->mAttribs['rc_last_oldid'], $edit->mAttribs['rc_this_oldid'] );
		$diff->showDiff( '', '' );
	}

//.........这里部分代码省略.........
            $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>";
        } else {
            $metadata = "";
        }
        $hidden = '';
        $recreate = '';
        if ($this->deletedSinceEdit) {
            if ('save' != $this->formtype) {
                $wgOut->addWikiText(wfMsg('deletedwhileediting'));
            } else {
                // Hide the toolbar and edit area, use can click preview to get it back
                // Add an confirmation checkbox and explanation.
                $toolbar = '';
                $hidden = 'type="hidden" style="display:none;"';
                $recreate = $wgOut->parse(wfMsg('confirmrecreate', $this->lastDelete->user_name, $this->lastDelete->log_comment));
                $recreate .= "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />" . "<label for='wpRecreate' title='" . wfMsg('tooltip-recreate') . "'>" . wfMsg('recreate') . "</label>";
            }
        }
        $temp = array('id' => 'wpSave', 'name' => 'wpSave', 'type' => 'submit', 'tabindex' => '5', 'value' => wfMsg('savearticle'), 'accesskey' => wfMsg('accesskey-save'), 'title' => wfMsg('tooltip-save'));
        $buttons['save'] = wfElement('input', $temp, '');
        $temp = array('id' => 'wpDiff', 'name' => 'wpDiff', 'type' => 'submit', 'tabindex' => '7', 'value' => wfMsg('showdiff'), 'accesskey' => wfMsg('accesskey-diff'), 'title' => wfMsg('tooltip-diff'));
        $buttons['diff'] = wfElement('input', $temp, '');
        global $wgLivePreview;
        if ($wgLivePreview && $wgUser->getOption('uselivepreview')) {
            $temp = array('id' => 'wpPreview', 'name' => 'wpPreview', 'type' => 'submit', 'tabindex' => '6', 'value' => wfMsg('showpreview'), 'accesskey' => '', 'title' => wfMsg('tooltip-preview'), 'style' => 'display: none;');
            $buttons['preview'] = wfElement('input', $temp, '');
            $temp = array('id' => 'wpLivePreview', 'name' => 'wpLivePreview', 'type' => 'submit', 'tabindex' => '6', 'value' => wfMsg('showlivepreview'), 'accesskey' => wfMsg('accesskey-preview'), 'title' => '', 'onclick' => $this->doLivePreviewScript());
            $buttons['live'] = wfElement('input', $temp, '');
        } else {
            $temp = array('id' => 'wpPreview', 'name' => 'wpPreview', 'type' => 'submit', 'tabindex' => '6', 'value' => wfMsg('showpreview'), 'accesskey' => wfMsg('accesskey-preview'), 'title' => wfMsg('tooltip-preview'));
            $buttons['preview'] = wfElement('input', $temp, '');
            $buttons['live'] = '';
        }
        $safemodehtml = $this->checkUnicodeCompliantBrowser() ? "" : "<input type='hidden' name=\"safemode\" value='1' />\n";
        $wgOut->addHTML(<<<END
{$toolbar}
<form id="editform" name="editform" method="post" action="{$action}" enctype="multipart/form-data">
END
);
        if (is_callable($formCallback)) {
            call_user_func_array($formCallback, array(&$wgOut));
        }
        // Put these up at the top to ensure they aren't lost on early form submission
        $wgOut->addHTML("\n<input type='hidden' value=\"" . htmlspecialchars($this->section) . "\" name=\"wpSection\" />\n<input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n\n<input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n\n<input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n");
        $wgOut->addHTML(<<<END
{$recreate}
{$commentsubject}
<textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
cols='{$cols}'{$ew} {$hidden}>
END
 . htmlspecialchars($this->safeUnicodeOutput($this->textbox1)) . "\n</textarea>\n\t\t");
        $wgOut->addWikiText($copywarn);
        $wgOut->addHTML("\n{$metadata}\n{$editsummary}\n{$checkboxhtml}\n{$safemodehtml}\n");
        $wgOut->addHTML("<div class='editButtons'>\n\t{$buttons['save']}\n\t{$buttons['preview']}\n\t{$buttons['live']}\n\t{$buttons['diff']}\n\t<span class='editHelp'>{$cancel} | {$edithelp}</span>\n</div><!-- editButtons -->\n</div><!-- editOptions -->");
        $wgOut->addWikiText(wfMsgForContent('edittools'));
        $wgOut->addHTML("\n<div class='templatesUsed'>\n{$templates}\n</div>\n");
        if ($wgUser->isLoggedIn()) {
            /**
             * To make it harder for someone to slip a user a page
             * which submits an edit form to the wiki without their
             * knowledge, a random token is associated with the login
             * session. If it's not passed back with the submission,
             * we won't save the page, or render user JavaScript and
             * CSS previews.
             */
            $token = htmlspecialchars($wgUser->editToken());
            $wgOut->addHTML("\n<input type='hidden' value=\"{$token}\" name=\"wpEditToken\" />\n");
        }
        # If a blank edit summary was previously provided, and the appropriate
        # user preference is active, pass a hidden tag here. This will stop the
        # user being bounced back more than once in the event that a summary
        # is not required.
        if ($this->missingSummary) {
            $wgOut->addHTML("<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n");
        }
        # For a bit more sophisticated detection of blank summaries, hash the
        # automatic one and pass that in a hidden field.
        $autosumm = $this->autoSumm ? $this->autoSumm : md5($this->summary);
        $wgOut->addHtml(wfHidden('wpAutoSummary', $autosumm));
        if ($this->isConflict) {
            $wgOut->addWikiText('==' . wfMsg("yourdiff") . '==');
            $de = new DifferenceEngine($this->mTitle);
            $de->setText($this->textbox2, $this->textbox1);
            $de->showDiff(wfMsg("yourtext"), wfMsg("storedversion"));
            $wgOut->addWikiText('==' . wfMsg("yourtext") . '==');
            $wgOut->addHTML("<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>" . htmlspecialchars($this->safeUnicodeOutput($this->textbox2)) . "\n</textarea>");
        }
        $wgOut->addHTML("</form>\n");
        if (!$wgUser->getOption('previewontop')) {
            if ($this->formtype == 'preview') {
                $this->showPreview();
            } else {
                $wgOut->addHTML('<div id="wikiPreview"></div>');
            }
            if ($this->formtype == 'diff') {
                $wgOut->addHTML($this->getDiff());
            }
        }
        wfProfileOut($fname);
    }

 /**
  * Show "your edit contains spam" page with your diff and text
  *
  * @param $match Text which triggered one or more filters
  */
 public function spamPageWithContent($match = false)
 {
     global $wgOut;
     $this->textbox2 = $this->textbox1;
     $wgOut->setPageTitle(wfMsg('spamprotectiontitle'));
     $wgOut->setRobotPolicy('noindex,nofollow');
     $wgOut->setArticleRelated(false);
     $wgOut->addHTML('<div id="spamprotected">');
     $wgOut->addWikiMsg('spamprotectiontext');
     if ($match) {
         $wgOut->addWikiMsg('spamprotectionmatch', wfEscapeWikiText($match));
     }
     $wgOut->addHTML('</div>');
     $wgOut->wrapWikiMsg('<h2>$1</h2>', "yourdiff");
     $de = new DifferenceEngine($this->mTitle);
     $de->setText($this->getContent(), $this->textbox2);
     $de->showDiff(wfMsg("storedversion"), wfMsg("yourtext"));
     $wgOut->wrapWikiMsg('<h2>$1</h2>', "yourtext");
     $this->showTextbox2();
     $wgOut->addReturnTo($this->getContextTitle(), array('action' => 'edit'));
 }

//.........这里部分代码省略.........
            $copywarnMsg = array('copyrightwarning2', '[[' . wfMsgForContent('copyrightpage') . ']]');
        }
        if ($wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage) {
            # prepare toolbar for edit buttons
            $toolbar = $this->getEditToolbar();
        } else {
            $toolbar = '';
        }
        // activate checkboxes if user wants them to be always active
        if (!$this->preview && !$this->diff) {
            # Sort out the "watch" checkbox
            if ($wgUser->getOption('watchdefault')) {
                # Watch all edits
                $this->watchthis = true;
            } elseif ($wgUser->getOption('watchcreations') && !$this->mTitle->exists()) {
                # Watch creations
                $this->watchthis = true;
            } elseif ($this->mTitle->userIsWatching()) {
                # Already watched
                $this->watchthis = true;
            }
            if ($wgUser->getOption('minordefault')) {
                $this->minoredit = true;
            }
        }
        $wgOut->addHTML($this->editFormPageTop);
        if ($wgUser->getOption('previewontop')) {
            if ('preview' == $this->formtype) {
                $this->showPreview($previewOutput);
            } else {
                $wgOut->addHTML('<div id="wikiPreview"></div>');
            }
            if ('diff' == $this->formtype) {
                $this->showDiff();
            }
        }
        $wgOut->addHTML($this->editFormTextTop);
        # if this is a comment, show a subject line at the top, which is also the edit summary.
        # Otherwise, show a summary field at the bottom
        $summarytext = htmlspecialchars($wgContLang->recodeForEdit($this->summary));
        # FIXME
        if ($this->section == 'new') {
            $commentsubject = "<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"{$summarytext}\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
            $editsummary = '';
            $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">" . wfMsg('subject-preview') . ':' . $sk->commentBlock($this->summary, $this->mTitle) . "</div>\n" : '';
            $summarypreview = '';
        } else {
            $commentsubject = '';
            $editsummary = "<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"{$summarytext}\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
            $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">" . wfMsg('summary-preview') . ':' . $sk->commentBlock($this->summary, $this->mTitle) . "</div>\n" : '';
            $subjectpreview = '';
        }
        # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
        if (!$this->preview && !$this->diff) {
            $wgOut->setOnloadHandler('document.editform.wpTextbox1.focus()');
        }
        $templates = $this->preview || $this->section != '' ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
        $formattedtemplates = $sk->formatTemplates($templates, $this->preview, $this->section != '');
        global $wgUseMetadataEdit;
        if ($wgUseMetadataEdit) {
            $metadata = $this->mMetaData;
            $metadata = htmlspecialchars($wgContLang->recodeForEdit($metadata));
            $top = wfMsgWikiHtml('metadata_help');
            $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>";
        } else {
            $metadata = "";

 protected function showConflict()
 {
     if (wfRunHooks('EditPageBeforeConflictDiff', array(&$this, &$this->out))) {
         // diff
         $this->out->addHtml('<div id="diff">');
         $this->out->wrapWikiMsg('<h2>$1</h2>', 'editpagelayout-diff-header');
         $de = new DifferenceEngine($this->mTitle);
         $de->setText($this->textbox2, $this->textbox1);
         $de->showDiff(wfMsg("yourtext"), wfMsg("storedversion"));
         $this->out->addHtml('</div>');
         // user's edit
         $this->out->addHtml('<div id="myedit">');
         $this->out->wrapWikiMsg('<h2>$1</h2>', 'editpagelayout-myedit-header');
         $this->showTextbox2();
         $this->out->addHtml('</div>');
     }
 }

//.........这里部分代码省略.........
        }
        if ($this->mTitle->isCascadeProtected()) {
            # Is this page under cascading protection from some source pages?
            list($cascadeSources, ) = $this->mTitle->getCascadeProtectionSources();
            if (count($cascadeSources) > 0) {
                # Explain, and list the titles responsible
                $notice = wfMsgExt('cascadeprotectedwarning', array('parsemag'), count($cascadeSources)) . "\n";
                foreach ($cascadeSources as $id => $page) {
                    $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
                }
            }
            $wgOut->addWikiText($notice);
        }
        if ($this->kblength === false) {
            $this->kblength = (int) (strlen($this->stripped_edit_text) / 1024);
        }
        if ($this->tooBig || $this->kblength > $wgMaxArticleSize) {
            $wgOut->addWikiText(wfMsg('longpageerror', $wgLang->formatNum($this->kblength), $wgMaxArticleSize));
        } elseif ($this->kblength > 29) {
            $wgOut->addWikiText(wfMsg('longpagewarning', $wgLang->formatNum($this->kblength)));
        }
        # need to parse the preview early so that we know which templates are used,
        # otherwise users with "show preview after edit box" will get a blank list
        if ($this->formtype == 'preview') {
            $previewOutput = $this->getPreviewText();
        }
        if ($wgUser->getOption('previewontop')) {
            if ('preview' == $this->formtype) {
                $this->showPreview($previewOutput);
            } else {
                $wgOut->addHTML('<div id="wikiPreview_' . htmlspecialchars($this->mvd_id) . '"></div>');
            }
            if ('diff' == $this->formtype) {
                $this->showDiff();
            }
        }
        $wgOut->addHTML($this->basic_html);
        $wgOut->addHTML('<div style="display:inline" class="mv_advanced_edit"><br>');
        // $rows = $wgUser->getIntOption( 'rows' );
        // $cols = $wgUser->getIntOption( 'cols' );
        // for ajax short edit area:
        $rows = 3;
        $cols = 40;
        $ew = $wgUser->getOption('editwidth');
        if ($ew) {
            $ew = " style=\"width:100%\"";
        } else {
            $ew = '';
        }
        // do ajax action:
        // $q = 'action=ajax';
        # if ( "no" == $redirect ) { $q .= "&redirect=no"; }
        // $action = $this->mTitle->escapeLocalURL( $q );
        if ($editFormType == 'seq') {
            $summary = wfMsg('mv_seq_summary');
        } else {
            $summary = wfMsg('summary');
        }
        $subject = wfMsg('subject');
        if ($this->mvd_id == 'seq') {
            $cancel = $sk->makeKnownLinkObj($this->mTitle, wfMsgExt('cancel', array('parseinline')));
            $edithelpurl = Skin::makeInternalOrExternalUrl(wfMsgForContent('mv_edithelpsequence'));
        } else {
            $cancel = '<a href="javascript:mv_disp_mvd(\'' . $this->mTitle->getDBkey() . '\',\'' . $this->mvd_id . '\');">' . wfMsgExt('cancel', array('parseinline')) . '</a>';
            $edithelpurl = Skin::makeInternalOrExternalUrl(wfMsgForContent('edithelppage'));
        }

 protected function showConflict()
 {
     global $wgOut;
     $this->textbox2 = $this->textbox1;
     $this->textbox1 = $this->getContent();
     if (wfRunHooks('EditPageBeforeConflictDiff', array(&$this, &$wgOut))) {
         $wgOut->wrapWikiMsg('<h2>$1</h2>', "yourdiff");
         $de = new DifferenceEngine($this->mTitle);
         $de->setText($this->textbox2, $this->textbox1);
         $de->showDiff(wfMsg("yourtext"), wfMsg("storedversion"));
         $wgOut->wrapWikiMsg('<h2>$1</h2>', "yourtext");
         $this->showTextbox2();
     }
 }

 /**
  * Show an edit conflict. textbox1 is already shown in showEditForm().
  * If you want to use another entry point to this function, be careful.
  */
 protected function showConflict()
 {
     global $wgOut;
     if (wfRunHooks('EditPageBeforeConflictDiff', array(&$this, &$wgOut))) {
         $wgOut->wrapWikiMsg('<h2>$1</h2>', "yourdiff");
         $de = new DifferenceEngine($this->mArticle->getContext());
         $de->setText($this->textbox2, $this->textbox1);
         $de->showDiff(wfMessage('yourtext')->parse(), wfMessage('storedversion')->text());
         $wgOut->wrapWikiMsg('<h2>$1</h2>', "yourtext");
         $this->showTextbox2();
     }
 }

    function showDiffPage()
    {
        global $wgUser, $wgTitle, $wgOut, $wgContLang, $wgOnlySysopsCanPatrol, $wgUseExternalEditor, $wgUseRCPatrol;
        $fname = 'DifferenceEngine::showDiffPage';
        wfProfileIn($fname);
        # If external diffs are enabled both globally and for the user,
        # we'll use the application/x-external-editor interface to call
        # an external diff tool like kompare, kdiff3, etc.
        if ($wgUseExternalEditor && $wgUser->getOption('externaldiff')) {
            global $wgInputEncoding, $wgServer, $wgScript, $wgLang;
            $wgOut->disable();
            header("Content-type: application/x-external-editor; charset=" . $wgInputEncoding);
            $url1 = $wgTitle->getFullURL("action=raw&oldid=" . $this->mOldid);
            $url2 = $wgTitle->getFullURL("action=raw&oldid=" . $this->mNewid);
            $special = $wgLang->getNsText(NS_SPECIAL);
            $control = <<<CONTROL
[Process]
Type=Diff text
Engine=MediaWiki
Script={$wgServer}{$wgScript}
Special namespace={$special}

[File]
Extension=wiki
URL={$url1}

[File 2]
Extension=wiki
URL={$url2}
CONTROL;
            echo $control;
            return;
        }
        # mOldid is false if the difference engine is called with a "vague" query for
        # a diff between a version V and its previous version V' AND the version V
        # is the first version of that article. In that case, V' does not exist.
        if ($this->mOldid === false) {
            $this->showFirstRevision();
            wfProfileOut($fname);
            return;
        }
        $t = $wgTitle->getPrefixedText() . " (Diff: {$this->mOldid}, " . "{$this->mNewid})";
        $mtext = wfMsg('missingarticle', $t);
        $wgOut->setArticleFlag(false);
        if (!$this->loadText()) {
            $wgOut->setPagetitle(wfMsg('errorpagetitle'));
            $wgOut->addHTML($mtext);
            wfProfileOut($fname);
            return;
        }
        $wgOut->suppressQuickbar();
        $oldTitle = $this->mOldPage->getPrefixedText();
        $newTitle = $this->mNewPage->getPrefixedText();
        if ($oldTitle == $newTitle) {
            $wgOut->setPageTitle($newTitle);
        } else {
            $wgOut->setPageTitle($oldTitle . ', ' . $newTitle);
        }
        $wgOut->setSubtitle(wfMsg('difference'));
        $wgOut->setRobotpolicy('noindex,follow');
        if (!($this->mOldPage->userCanRead() && $this->mNewPage->userCanRead())) {
            $wgOut->loginToUse();
            $wgOut->output();
            wfProfileOut($fname);
            exit;
        }
        $sk = $wgUser->getSkin();
        $talk = $wgContLang->getNsText(NS_TALK);
        $contribs = wfMsg('contribslink');
        $this->mOldComment = $sk->formatComment($this->mOldComment);
        $this->mNewComment = $sk->formatComment($this->mNewComment);
        $oldUserLink = $sk->makeLinkObj(Title::makeTitleSafe(NS_USER, $this->mOldUser), $this->mOldUser);
        $newUserLink = $sk->makeLinkObj(Title::makeTitleSafe(NS_USER, $this->mNewUser), $this->mNewUser);
        $oldUTLink = $sk->makeLinkObj(Title::makeTitleSafe(NS_USER_TALK, $this->mOldUser), $talk);
        $newUTLink = $sk->makeLinkObj(Title::makeTitleSafe(NS_USER_TALK, $this->mNewUser), $talk);
        $oldContribs = $sk->makeKnownLinkObj(Title::makeTitle(NS_SPECIAL, 'Contributions'), $contribs, 'target=' . urlencode($this->mOldUser));
        $newContribs = $sk->makeKnownLinkObj(Title::makeTitle(NS_SPECIAL, 'Contributions'), $contribs, 'target=' . urlencode($this->mNewUser));
        if ($this->newRev->isCurrent() && $wgUser->isAllowed('rollback')) {
            $rollback = '&nbsp;&nbsp;&nbsp;<strong>[' . $sk->makeKnownLinkObj($wgTitle, wfMsg('rollbacklink'), 'action=rollback&from=' . urlencode($this->mNewUser) . '&token=' . urlencode($wgUser->editToken(array($wgTitle->getPrefixedText(), $this->mNewUser)))) . ']</strong>';
        } else {
            $rollback = '';
        }
        if ($wgUseRCPatrol && $this->mRcidMarkPatrolled != 0 && $wgUser->isLoggedIn() && ($wgUser->isAllowed('rollback') || !$wgOnlySysopsCanPatrol)) {
            $patrol = ' [' . $sk->makeKnownLinkObj($wgTitle, wfMsg('markaspatrolleddiff'), "action=markpatrolled&rcid={$this->mRcidMarkPatrolled}") . ']';
        } else {
            $patrol = '';
        }
        $prevlink = $sk->makeKnownLinkObj($wgTitle, wfMsg('previousdiff'), 'diff=prev&oldid=' . $this->mOldid);
        if ($this->newRev->isCurrent()) {
            $nextlink = '';
        } else {
            $nextlink = $sk->makeKnownLinkObj($wgTitle, wfMsg('nextdiff'), 'diff=next&oldid=' . $this->mNewid);
        }
        $oldHeader = "<strong>{$this->mOldtitle}</strong><br />{$oldUserLink} " . "({$oldUTLink} | {$oldContribs})<br />" . $this->mOldComment . '<br />' . $prevlink;
        $newHeader = "<strong>{$this->mNewtitle}</strong><br />{$newUserLink} " . "({$newUTLink} | {$newContribs}) {$rollback}<br />" . $this->mNewComment . '<br />' . $nextlink . $patrol;
        DifferenceEngine::showDiff($this->mOldtext, $this->mNewtext, $oldHeader, $newHeader);
        $wgOut->addHTML("<hr /><h2>{$this->mPagetitle}</h2>\n");
        if (!$this->newRev->isCurrent()) {
            $oldEditSectionSetting = $wgOut->mParserOptions->setEditSection(false);
        }
//.........这里部分代码省略.........