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317 lines
11 KiB
317 lines
11 KiB
/***************************************************************************
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kafkahtmlpart.h
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-------------------
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copyright : (C) 2001 - The Kafka Team
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(C) 2003, 2004 - Nicolas Deschildre
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email : kde-kafka@master.kde.org && ndeschildre@tdewebdev.org
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***************************************************************************/
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/***************************************************************************
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* *
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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 General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef KAFKAHTMLPART_H
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#define KAFKAHTMLPART_H
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#include <kurl.h>
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#include <khtml_part.h>
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#include <khtml_events.h>
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#include <kparts/event.h>
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#include <tqstringlist.h>
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#include <tqptrlist.h>
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#include <tqdockwindow.h>
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#include <tqevent.h>
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#include <dom/dom_node.h>
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#include <dom/dom_element.h>
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class DOMString;
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class KafkaWidgetPrivate;
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class KafkaDocument;
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class NodeModifsSet;
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class TQPopupMenu;
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/*
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* It is the main central widget which get the cursor focus and takes care of "simple" edition
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* such as typing text.
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*/
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class KafkaWidget : public KHTMLPart
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{
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Q_OBJECT
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TQ_OBJECT
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public:
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KafkaWidget(TQWidget *parent, TQWidget *widgetParent, KafkaDocument *part,
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const char *name = 0);
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~KafkaWidget();
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/**
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* Category: Standard Functions
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* Called by KafkaPart to create a new document
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*/
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void newDocument();
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/**
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* Returns the current Node (which has the focus) and its offset.
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* @param currentNode The Node which has the cursor focus.
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* @param offset The offset of the cursor in _currentNode.
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*/
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void getCurrentNode(DOM::Node ¤tNode, long &offset);
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/**
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* Set the focus.
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* @param node The DOM::Node which will get the focus.
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* @param offset The offset of the cursor if node is a DOM::Node::TEXT_NODE
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*/
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void setCurrentNode(DOM::Node node, int offset);
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/**
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* Convenience function to set the current node.
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* @param node The Quanta node which will get the focus.
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* @param offset The offset of the cursor if node tag is of type Tag::Text.
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*/
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void setCurrentNode(Node* cursorNode, int cursorOffset);
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/**
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* Get the next DOM::Node after _node.
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* @param _node The DOM::Node the search starts from.
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* @param goUp A needed boolean for several consecutive call to
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* this function. Setting it to false by default, or to true if we don't want to go through
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* the childs of _node.
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* @param skipParentNodes Specifies if we should skip the parent Node when going up :
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* this implies that Nodes will not be returned two times.
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* @param dontBlock Specifies if the search should or not be blocked by BlockingTags.
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* @param _endNode Specifies at which DOM::Node the search should end. It is useful
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* when setting skipParentNodes to true.
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* @return Returns the next Node :)
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*/
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DOM::Node getNextNode(DOM::Node _node, bool &goUp, bool skipParentNodes = false,
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bool dontBlock = false, DOM::Node _endNode = DOM::Node());
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/**
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* The same that above, but this function search the previous DOM::Node.
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*/
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DOM::Node getPrevNode(DOM::Node _node, bool &goUp, bool skipParentNodes = false,
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bool dontBlock = false, DOM::Node _endNode = DOM::Node());
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/**
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* Set the TagActions checked/unchecked in context.
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* This is called when the cursor position changes.
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* @param domNode
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* @param offset
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*/
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void updateToggableTagActions(/*const DOM::Node &domNode, long offset*/) const;
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/** --------------- DOM::Node modifications -------------------------- */
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/**
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* It will move DOM::Nodes from startNode to endNode as children of newParent. It does NOT check
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* if the move is valid, so it may crash. Please check before with kafkaCommon::parentSupports().
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* @param newParent The new parent of the DOM::Nodes.
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* @param startNode The first node to move.
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* @param endNode Starting from endNode, the last sibling to move.
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* @param refNode The reference DOM::Node.
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* @bool before If set to true, the DOM::nodes will be moved at the left of refNode,
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* otherwise they will be happenend at the right of refNode.
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*/
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void moveDomNodes(DOM::Node newParent, DOM::Node startNode, DOM::Node endNode,
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DOM::Node refNode, bool before);
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public slots:
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/**
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* Category: HTML Editing Functions
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* Adds text into a DOM::Node of type DOM::Node::TEXT_NODE
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* @param node The node where text should be added
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* @param text The text to be added
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* @param position Specifies the position where to add text
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*/
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void insertText(DOM::Node node, const TQString &text, int position);
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/**
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* Category: HTML Editing Functions
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* Adds text into the current DOM::Node
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* @param text The text to add
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* @param position Specifies the position where to add text, if it's -1
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* the text will be appended after the last position
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*/
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void insertText(const TQString &text, int position);
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/**
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* Puts all the child Text DOM::Node into a "normal" form where only
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* structure (e.g., elements, comments, processing instructions, CDATA
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* sections, and entity references) separates Text nodes, i.e., there are
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* neither adjacent Text nodes nor empty Text nodes.
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* Should be used instead of DOM::Node::normalize().
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* @param _node This node is the parent node of the childs normalized
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*/
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void normalize(DOM::Node _node);
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/**
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* Set the cursor after having loaded the DOM tree from scratch.
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* Look for the first available location for the cursor.
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*/
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void putCursorAtFirstAvailableLocation();
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/**
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* Reload the TagAttributesTree if necessary;
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* @param domNode The current DOM::Node.
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* @param offset The current cursor offset.
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*/
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void slotNewCursorPos(const DOM::Node &domNode, long offset);
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/**
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* Called to set the cursor Position with a TQTimer::singleShot() after calling
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* document->updateRendering()
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*/
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void slotDelayedSetCaretPosition();
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signals:
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/**
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* Category: HTML Editing Signal
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* Is emitted whenever the DOM tree has changed
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* Not yet implemented
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*/
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void domChanged();
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/**
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* Category: HTML Editing Signal
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* Is emitted whenever a dom Node is inserted to the tree.
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* @param node is the node created.
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* @param insertChilds Specifies if we should insert the _node's childs
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* @param modifs The changes made are logged into modifs.
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*/
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void domNodeInserted(DOM::Node node, bool insertChilds, NodeModifsSet *modifs);
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/**
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* Category: HTML Editing Signal
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* Is emitted whenever a DOM node has its properties modified.
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* @param node is the node modified.
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* @param modifs The changes made are logged into modifs.
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*/
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void domNodeModified(DOM::Node node, NodeModifsSet *modifs);
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/**
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* Category: HTML Editing Signal
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* Is emitted whenever a DOM node is about to be removed from the tree.
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* @param node is the node to be deleted.
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* @param deleteChilds Specifies if we should delete the child nodes of _node.
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* @param modifs The changes made are logged into modifs.
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*/
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void domNodeIsAboutToBeRemoved(DOM::Node node, bool deleteChilds, NodeModifsSet *modifs);
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/**
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* Is emitted whenever a DOM::Node is about to be moved in the tree.
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* @param node The DOM::Node which will be moved.
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* @param newParent The new parent of domNode.
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* @param before domNode will be placed before before.
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* @param modifs The changes made are logged into modifs.
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*/
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void domNodeIsAboutToBeMoved(DOM::Node node, DOM::Node newParent, DOM::Node before, NodeModifsSet *modifs);
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/**
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* Category: HTML Editing Signal
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* Is emitted whenever the cursor position change in one DOM::Node.
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* @param node The DOM::Node which contains the cursor.
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* @param _offset The new cursorOffset.
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*/
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void domNodeNewCursorPos(DOM::Node node, int offset);
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/**
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* Category: Widget Signal
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* Is emitted whenever the KafkaWidget widget get or lost the focus
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* @param focus True if it has got the focus, false otherwise.
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*/
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void hasFocus(bool focus);
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protected:
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bool eventFilter(TQObject *object, TQEvent *event);
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virtual void khtmlMouseMoveEvent(khtml::MouseMoveEvent *event);
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virtual void khtmlMousePressEvent(khtml::MousePressEvent *event);
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virtual void khtmlMouseReleaseEvent(khtml::MouseReleaseEvent *event);
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virtual void khtmlDrawContentsEvent(khtml::DrawContentsEvent *event);
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private slots:
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void slotContextMenuRequested(const TQString& url, const TQPoint& point);
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private:
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#if 0
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/**
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* NOT IMPLEMENTED.
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* Internal function used by keyBackspace(), keyDelete() to delete Nodes.
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* @param startNode The DOM::Node location of the point where we start deleting Nodes.
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* @param offset The offset location of the point where we start deleting Nodes. They can be
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* updated.
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* @param backspace Specifies if it should delete Nodes backward (backspace keystroke)
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* or torwards (delete backspace).
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*/
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void keyDeleteNodes(DOM::Node &startNode, long &offset, bool backspace);
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#endif
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/**
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* Delete one character/DOM::Node left to the cursor.
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*/
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void keyBackspace();
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/**
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* Delete one character/DOM::Node right to the cursor.
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*/
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void keyDelete();
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/**
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* Break the current line.
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* @param specialPressed If a special touch is pressed e.g. ctrl, we try to insert a BR,
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* otherwise we try to insert a P.
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*/
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void keyReturn(bool specialPressed);
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/**
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* Postprocess the cursor position, i.e. when the cursor is between two
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* DOM::Nodes, it set the cursor in the right node to make edition as
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* in a word processor.
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*/
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void postprocessCursorPosition();
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/**
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* Make the cursor visible whenever it is going :-)
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* @param xMargin The minimum margin in the X axis between the cursor
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* and the edge of the widget.
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* @param yMargin The minimim margin in the Y axis between the cursor
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* and the edge of the widget.
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*/
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void makeCursorVisible(int xMargin = 50, int yMargin = 50);
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/**
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* Removes the selection and places the cursor in the right place.
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*/
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void removeSelection();
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void applyQueuedToggableTagActions();
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private:
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/**
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* When some changes are made, store the changes made in m_modifs.
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* It will be created when a key is pressed, and will be submitted to
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* the undoRedo system after the changes have been made.
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*/
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NodeModifsSet *m_modifs;
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DOM::Node m_currentNode;
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KafkaWidgetPrivate *d;
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KafkaDocument *w;
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friend class KafkaWidgetPrivate;
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TQPopupMenu* m_contextPopupMenu;
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};
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#endif
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