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Copy pathtext-editor-element.js
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Copy pathtext-editor-element.js
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359 lines (297 loc) · 9.7 KB
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const { Emitter, Range } = require('atom');
const Grim = require('grim');
const TextEditorComponent = require('./text-editor-component');
const dedent = require('dedent');
class TextEditorElement extends HTMLElement {
initialize(component) {
this.component = component;
return this;
}
get shadowRoot() {
Grim.deprecate(dedent`
The contents of \`atom-text-editor\` elements are no longer encapsulated
within a shadow DOM boundary. Please, stop using \`shadowRoot\` and access
the editor contents directly instead.
`);
return this;
}
get rootElement() {
Grim.deprecate(dedent`
The contents of \`atom-text-editor\` elements are no longer encapsulated
within a shadow DOM boundary. Please, stop using \`rootElement\` and access
the editor contents directly instead.
`);
return this;
}
createdCallback() {
this.emitter = new Emitter();
this.initialText = this.textContent;
if (this.tabIndex == null) this.tabIndex = -1;
this.addEventListener('focus', event =>
this.getComponent().didFocus(event)
);
this.addEventListener('blur', event => this.getComponent().didBlur(event));
}
attachedCallback() {
this.getComponent().didAttach();
this.emitter.emit('did-attach');
}
detachedCallback() {
this.emitter.emit('did-detach');
this.getComponent().didDetach();
}
attributeChangedCallback(name, oldValue, newValue) {
if (this.component) {
switch (name) {
case 'mini':
this.getModel().update({ mini: newValue != null });
break;
case 'placeholder-text':
this.getModel().update({ placeholderText: newValue });
break;
case 'gutter-hidden':
this.getModel().update({ lineNumberGutterVisible: newValue == null });
break;
case 'readonly':
this.getModel().update({ readOnly: newValue != null });
break;
}
}
}
// Extended: Get a promise that resolves the next time the element's DOM
// is updated in any way.
//
// This can be useful when you've made a change to the model and need to
// be sure this change has been flushed to the DOM.
//
// Returns a {Promise}.
getNextUpdatePromise() {
return this.getComponent().getNextUpdatePromise();
}
getModel() {
return this.getComponent().props.model;
}
setModel(model) {
this.getComponent().update({ model });
this.updateModelFromAttributes();
}
updateModelFromAttributes() {
const props = { mini: this.hasAttribute('mini') };
if (this.hasAttribute('placeholder-text'))
props.placeholderText = this.getAttribute('placeholder-text');
if (this.hasAttribute('gutter-hidden'))
props.lineNumberGutterVisible = false;
this.getModel().update(props);
if (this.initialText) this.getModel().setText(this.initialText);
}
onDidAttach(callback) {
return this.emitter.on('did-attach', callback);
}
onDidDetach(callback) {
return this.emitter.on('did-detach', callback);
}
measureDimensions() {
this.getComponent().measureDimensions();
}
setWidth(width) {
this.style.width =
this.getComponent().getGutterContainerWidth() + width + 'px';
}
getWidth() {
return this.getComponent().getScrollContainerWidth();
}
setHeight(height) {
this.style.height = height + 'px';
}
getHeight() {
return this.getComponent().getScrollContainerHeight();
}
onDidChangeScrollLeft(callback) {
return this.emitter.on('did-change-scroll-left', callback);
}
onDidChangeScrollTop(callback) {
return this.emitter.on('did-change-scroll-top', callback);
}
// Deprecated: get the width of an `x` character displayed in this element.
//
// Returns a {Number} of pixels.
getDefaultCharacterWidth() {
return this.getComponent().getBaseCharacterWidth();
}
// Extended: get the width of an `x` character displayed in this element.
//
// Returns a {Number} of pixels.
getBaseCharacterWidth() {
return this.getComponent().getBaseCharacterWidth();
}
getMaxScrollTop() {
return this.getComponent().getMaxScrollTop();
}
getScrollHeight() {
return this.getComponent().getScrollHeight();
}
getScrollWidth() {
return this.getComponent().getScrollWidth();
}
getVerticalScrollbarWidth() {
return this.getComponent().getVerticalScrollbarWidth();
}
getHorizontalScrollbarHeight() {
return this.getComponent().getHorizontalScrollbarHeight();
}
getScrollTop() {
return this.getComponent().getScrollTop();
}
setScrollTop(scrollTop) {
const component = this.getComponent();
component.setScrollTop(scrollTop);
component.scheduleUpdate();
}
getScrollBottom() {
return this.getComponent().getScrollBottom();
}
setScrollBottom(scrollBottom) {
return this.getComponent().setScrollBottom(scrollBottom);
}
getScrollLeft() {
return this.getComponent().getScrollLeft();
}
setScrollLeft(scrollLeft) {
const component = this.getComponent();
component.setScrollLeft(scrollLeft);
component.scheduleUpdate();
}
getScrollRight() {
return this.getComponent().getScrollRight();
}
setScrollRight(scrollRight) {
return this.getComponent().setScrollRight(scrollRight);
}
// Essential: Scrolls the editor to the top.
scrollToTop() {
this.setScrollTop(0);
}
// Essential: Scrolls the editor to the bottom.
scrollToBottom() {
this.setScrollTop(Infinity);
}
hasFocus() {
return this.getComponent().focused;
}
// Extended: Converts a buffer position to a pixel position.
//
// * `bufferPosition` A {Point}-like object that represents a buffer position.
//
// Be aware that calling this method with a column that does not translate
// to column 0 on screen could cause a synchronous DOM update in order to
// measure the requested horizontal pixel position if it isn't already
// cached.
//
// Returns an {Object} with two values: `top` and `left`, representing the
// pixel position.
pixelPositionForBufferPosition(bufferPosition) {
const screenPosition = this.getModel().screenPositionForBufferPosition(
bufferPosition
);
return this.getComponent().pixelPositionForScreenPosition(screenPosition);
}
// Extended: Converts a screen position to a pixel position.
//
// * `screenPosition` A {Point}-like object that represents a buffer position.
//
// Be aware that calling this method with a non-zero column value could
// cause a synchronous DOM update in order to measure the requested
// horizontal pixel position if it isn't already cached.
//
// Returns an {Object} with two values: `top` and `left`, representing the
// pixel position.
pixelPositionForScreenPosition(screenPosition) {
screenPosition = this.getModel().clipScreenPosition(screenPosition);
return this.getComponent().pixelPositionForScreenPosition(screenPosition);
}
screenPositionForPixelPosition(pixelPosition) {
return this.getComponent().screenPositionForPixelPosition(pixelPosition);
}
pixelRectForScreenRange(range) {
range = Range.fromObject(range);
const start = this.pixelPositionForScreenPosition(range.start);
const end = this.pixelPositionForScreenPosition(range.end);
const lineHeight = this.getComponent().getLineHeight();
return {
top: start.top,
left: start.left,
height: end.top + lineHeight - start.top,
width: end.left - start.left
};
}
pixelRangeForScreenRange(range) {
range = Range.fromObject(range);
return {
start: this.pixelPositionForScreenPosition(range.start),
end: this.pixelPositionForScreenPosition(range.end)
};
}
getComponent() {
if (!this.component) {
this.component = new TextEditorComponent({
element: this,
mini: this.hasAttribute('mini'),
updatedSynchronously: this.updatedSynchronously,
readOnly: this.hasAttribute('readonly')
});
this.updateModelFromAttributes();
}
return this.component;
}
setUpdatedSynchronously(updatedSynchronously) {
this.updatedSynchronously = updatedSynchronously;
if (this.component)
this.component.updatedSynchronously = updatedSynchronously;
return updatedSynchronously;
}
isUpdatedSynchronously() {
return this.component
? this.component.updatedSynchronously
: this.updatedSynchronously;
}
// Experimental: Invalidate the passed block {Decoration}'s dimensions,
// forcing them to be recalculated and the surrounding content to be adjusted
// on the next animation frame.
//
// * {blockDecoration} A {Decoration} representing the block decoration you
// want to update the dimensions of.
invalidateBlockDecorationDimensions() {
this.getComponent().invalidateBlockDecorationDimensions(...arguments);
}
setFirstVisibleScreenRow(row) {
this.getModel().setFirstVisibleScreenRow(row);
}
getFirstVisibleScreenRow() {
return this.getModel().getFirstVisibleScreenRow();
}
getLastVisibleScreenRow() {
return this.getModel().getLastVisibleScreenRow();
}
getVisibleRowRange() {
return this.getModel().getVisibleRowRange();
}
intersectsVisibleRowRange(startRow, endRow) {
return !(
endRow <= this.getFirstVisibleScreenRow() ||
this.getLastVisibleScreenRow() <= startRow
);
}
selectionIntersectsVisibleRowRange(selection) {
const { start, end } = selection.getScreenRange();
return this.intersectsVisibleRowRange(start.row, end.row + 1);
}
setFirstVisibleScreenColumn(column) {
return this.getModel().setFirstVisibleScreenColumn(column);
}
getFirstVisibleScreenColumn() {
return this.getModel().getFirstVisibleScreenColumn();
}
}
module.exports = document.registerElement('atom-text-editor', {
prototype: TextEditorElement.prototype
});
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